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1 /* fix-header.c - Make C header file suitable for C++.
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2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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3 2002, 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify it
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6 under the terms of the GNU General Public License as published by the
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7 Free Software Foundation; either version 3, or (at your option) any
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8 later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; see the file COPYING3. If not see
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17 <http://www.gnu.org/licenses/>. */
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18
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19 /* This program massages a system include file (such as stdio.h),
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20 into a form that is compatible with GNU C and GNU C++.
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21
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22 * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
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23 if they seem to be needed. These prevent C++ compilers from name
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24 mangling the functions inside the braces.
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25
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26 * If an old-style incomplete function declaration is seen (without
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27 an argument list), and it is a "standard" function listed in
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28 the file sys-protos.h (and with a non-empty argument list), then
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29 the declaration is converted to a complete prototype by replacing
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30 the empty parameter list with the argument list from sys-protos.h.
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31
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32 * The program can be given a list of (names of) required standard
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33 functions (such as fclose for stdio.h). If a required function
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34 is not seen in the input, then a prototype for it will be
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35 written to the output.
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36
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37 * If all of the non-comment code of the original file is protected
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38 against multiple inclusion:
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39 #ifndef FOO
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40 #define FOO
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41 <body of include file>
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42 #endif
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43 then extra matter added to the include file is placed inside the <body>.
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44
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45 * If the input file is OK (nothing needs to be done);
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46 the output file is not written (nor removed if it exists).
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47
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48 There are also some special actions that are done for certain
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49 well-known standard include files:
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50
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51 * If argv[1] is "sys/stat.h", the Posix.1 macros
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52 S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
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53 they were missing, and the corresponding "traditional" S_IFxxx
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54 macros were defined.
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55
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56 * If argv[1] is "errno.h", errno is declared if it was missing.
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57
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58 * TODO: The input file should be read complete into memory, because:
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59 a) it needs to be scanned twice anyway, and
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60 b) it would be nice to allow update in place.
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61
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62 Usage:
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63 fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
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64 where:
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65 * FOO.H is the relative file name of the include file,
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66 as it would be #include'd by a C file. (E.g. stdio.h)
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67 * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
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68 * OUTFILE.H is the full pathname for where to write the output file,
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69 if anything needs to be done. (e.g. ./include/stdio.h)
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70 * OPTIONS can be -D or -I switches as you would pass to cpp.
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71
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72 Written by Per Bothner <bothner@cygnus.com>, July 1993. */
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73
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74 #include "bconfig.h"
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75 #include "system.h"
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76 #include "coretypes.h"
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77 #include "tm.h"
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78 #include "obstack.h"
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79 #include "scan.h"
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80 #include "cpplib.h"
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81 #include "incpath.h"
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82 #include "errors.h"
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83
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84 #ifdef TARGET_EXTRA_INCLUDES
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85 void
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86 TARGET_EXTRA_INCLUDES (const char *sysroot ATTRIBUTE_UNUSED,
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87 const char *iprefix ATTRIBUTE_UNUSED,
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88 int stdinc ATTRIBUTE_UNUSED)
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89 {
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90 }
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91 #endif
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92
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93 #ifdef TARGET_EXTRA_PRE_INCLUDES
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94 void
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95 TARGET_EXTRA_PRE_INCLUDES (const char *sysroot ATTRIBUTE_UNUSED,
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96 const char *iprefix ATTRIBUTE_UNUSED,
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97 int stdinc ATTRIBUTE_UNUSED)
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98 {
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99 }
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100 #endif
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101
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102 struct line_maps line_table;
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103
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104 sstring buf;
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105
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106 int verbose = 0;
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107 int partial_count = 0;
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108 int warnings = 0;
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109
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110 #if ADD_MISSING_EXTERN_C
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111 int missing_extern_C_count = 0;
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112 #endif
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113
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114 #include "xsys-protos.h"
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115
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116 #ifdef FIXPROTO_IGNORE_LIST
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117 /* This is a currently unused feature. */
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118
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119 /* List of files and directories to ignore.
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120 A directory name (ending in '/') means ignore anything in that
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121 directory. (It might be more efficient to do directory pruning
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122 earlier in fixproto, but this is simpler and easier to customize.) */
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123
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124 static const char *const files_to_ignore[] = {
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125 "X11/",
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126 FIXPROTO_IGNORE_LIST
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127 0
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128 };
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129 #endif
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130
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131 char *inf_buffer;
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132 char *inf_limit;
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133 char *inf_ptr;
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134 static const char *cur_file;
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135
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136 /* Certain standard files get extra treatment */
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137
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138 enum special_file
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139 {
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140 no_special,
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141 #ifdef errno_h
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142 #undef errno_h
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143 #endif
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144 errno_h,
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145 #ifdef stdio_h
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146 #undef stdio_h
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147 #endif
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148 stdio_h,
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149 #ifdef stdlib_h
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150 #undef stdlib_h
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151 #endif
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152 stdlib_h,
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153 #ifdef sys_stat_h
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154 #undef sys_stat_h
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155 #endif
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156 sys_stat_h
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157 };
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158
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159 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
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160 by an empty name (i.e. by "\0\0"). */
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161
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162 typedef const char *namelist;
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163
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164 /* The following macros provide the bits for symbol_flags. */
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165 typedef int symbol_flags;
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166
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167 /* Used to mark names defined in the ANSI/ISO C standard. */
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168 #define ANSI_SYMBOL 1
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169
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170 /* We no longer massage include files for POSIX or XOPEN symbols,
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171 as there are now several versions of the POSIX and XOPEN standards,
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172 and it would be a maintenance nightmare for us to track them all.
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173 Better to be compatible with the system include files. */
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174 /*#define ADD_MISSING_POSIX 1 */
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175 /*#define ADD_MISSING_XOPEN 1 */
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176
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177 #if ADD_MISSING_POSIX
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178 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
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179 #define POSIX1_SYMBOL 2
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180 #define POSIX2_SYMBOL 4
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181 #else
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182 #define POSIX1_SYMBOL 0
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183 #define POSIX2_SYMBOL 0
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184 #endif
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185
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186 #if ADD_MISSING_XOPEN
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187 /* Used to mark names defined in X/Open Portability Guide. */
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188 #define XOPEN_SYMBOL 8
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189 /* Used to mark names defined in X/Open UNIX Extensions. */
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190 #define XOPEN_EXTENDED_SYMBOL 16
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191 #else
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192 #define XOPEN_SYMBOL 0
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193 #define XOPEN_EXTENDED_SYMBOL 0
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194 #endif
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195
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196 /* Used to indicate names that are not functions */
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197 #define MACRO_SYMBOL 512
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198
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199 struct symbol_list {
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200 symbol_flags flags;
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201 namelist names;
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202 };
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203
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204 #define SYMBOL_TABLE_SIZE 10
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205 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
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206 int cur_symbol_table_size;
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207
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208 static void add_symbols (symbol_flags, namelist);
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209 static struct fn_decl *lookup_std_proto (const char *, int);
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210 static void write_lbrac (void);
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211 static void recognized_macro (const char *);
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212 static void check_macro_names (cpp_reader *, namelist);
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213 static void read_scan_file (char *, int, char **);
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214 static void write_rbrac (void);
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215 static int inf_skip_spaces (int);
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216 static int inf_read_upto (sstring *, int);
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217 static int inf_scan_ident (sstring *, int);
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218 static int check_protection (int *, int *);
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219 static void cb_file_change (cpp_reader *, const struct line_map *);
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220
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221 static void
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222 add_symbols (symbol_flags flags, namelist names)
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223 {
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224 symbol_table[cur_symbol_table_size].flags = flags;
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225 symbol_table[cur_symbol_table_size].names = names;
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226 cur_symbol_table_size++;
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227 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
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228 fatal ("too many calls to add_symbols");
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229 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
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230 }
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231
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232 struct std_include_entry {
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233 const char *const name;
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234 const symbol_flags flags;
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235 const namelist names;
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236 };
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237
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238 const char NONE[] = ""; /* The empty namelist. */
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239
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240 /* Special name to indicate a continuation line in std_include_table. */
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241 const char CONTINUED[] = "";
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242
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243 const struct std_include_entry *include_entry;
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244
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245 const struct std_include_entry std_include_table [] = {
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246 { "ctype.h", ANSI_SYMBOL,
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247 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
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248 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
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249
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250 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
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251
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252 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
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253
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254 /* ANSI_SYMBOL is wrong, but ... */
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255 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
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256 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
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257 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
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258 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
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259 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
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260
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261 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
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262
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263 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
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264 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
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265
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266 /*{ "limit.h", ... provided by gcc }, */
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267
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268 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
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269
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270 { "math.h", ANSI_SYMBOL,
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271 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
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272 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
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273 tan\0tanh\0" },
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274
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275 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
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276
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277 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
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278
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279 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
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280 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
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281
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282 /* Left out signal() - its prototype is too complex for us!
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283 Also left out "sigaction sigaddset sigdelset sigemptyset
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284 sigfillset sigismember sigpending sigprocmask sigsuspend"
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285 because these need sigset_t or struct sigaction.
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286 Most systems that provide them will also declare them. */
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287 { "signal.h", ANSI_SYMBOL, "raise\0" },
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288 { CONTINUED, POSIX1_SYMBOL, "kill\0" },
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289
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290 { "stdio.h", ANSI_SYMBOL,
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291 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
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292 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
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293 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
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294 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
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295 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
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296 tmpnam\0ungetc\0" },
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297 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
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298 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
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299 /* Should perhaps also handle NULL, EOF, ... ? */
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300
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301 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
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302 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
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303 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
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304 Should perhaps also add NULL */
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305 { "stdlib.h", ANSI_SYMBOL,
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306 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
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307 exit\0free\0getenv\0labs\0malloc\0qsort\0rand\0realloc\0\
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308 srand\0strtod\0strtol\0strtoul\0system\0" },
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309 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
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310 { CONTINUED, POSIX1_SYMBOL, "putenv\0" },
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311
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312 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
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313 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
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314 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
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315 strtok\0strxfrm\0" },
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316 /* Should perhaps also add NULL and size_t */
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317
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318 { "strings.h", XOPEN_EXTENDED_SYMBOL,
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319 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
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320
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321 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
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322
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323 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
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324 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
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325 and many systems do have <sys/ioctl.h> but not <strops.h>. */
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326 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
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327
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328 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
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329
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330 { "sys/stat.h", POSIX1_SYMBOL,
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331 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
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332 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
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333 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
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334 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
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335 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
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336
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337 #if 0
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338 /* How do we handle fd_set? */
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339 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
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340 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
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341 #endif
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342
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343 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
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344 /* "sys/types.h" add types (not in old g++-include) */
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345
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346 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
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347
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348 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
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349 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
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350 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
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351 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
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352
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353 { "tar.h", POSIX1_SYMBOL, NONE },
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354
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355 { "termios.h", POSIX1_SYMBOL,
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356 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
|
|
|
357
|
|
|
358 { "time.h", ANSI_SYMBOL,
|
|
|
359 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0" },
|
|
|
360 { CONTINUED, POSIX1_SYMBOL, "tzset\0" },
|
|
|
361
|
|
|
362 { "unistd.h", POSIX1_SYMBOL,
|
|
|
363 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
|
|
|
364 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
|
|
|
365 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
|
|
|
366 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
|
|
|
367 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
|
|
|
368 ttyname\0unlink\0write\0" },
|
|
|
369 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
|
|
|
370 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
|
|
|
371 "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
|
|
|
372
|
|
|
373 { "utime.h", POSIX1_SYMBOL, "utime\0" },
|
|
|
374
|
|
|
375 { NULL, 0, NONE }
|
|
|
376 };
|
|
|
377
|
|
|
378 enum special_file special_file_handling = no_special;
|
|
|
379
|
|
|
380 /* They are set if the corresponding macro has been seen. */
|
|
|
381 /* The following are only used when handling sys/stat.h */
|
|
|
382 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
|
|
|
383 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
|
|
|
384 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
|
|
|
385 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
|
|
|
386 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
|
|
|
387 int seen_S_IFREG = 0, seen_S_ISREG = 0;
|
|
|
388 /* The following are only used when handling errno.h */
|
|
|
389 int seen_errno = 0;
|
|
|
390 /* The following are only used when handling stdlib.h */
|
|
|
391 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
|
|
|
392
|
|
|
393 struct obstack scan_file_obstack;
|
|
|
394
|
|
|
395 /* NOTE: If you edit this, also edit gen-protos.c !! */
|
|
|
396
|
|
|
397 static struct fn_decl *
|
|
|
398 lookup_std_proto (const char *name, int name_length)
|
|
|
399 {
|
|
|
400 int i = hashstr (name, name_length) % HASH_SIZE;
|
|
|
401 int i0 = i;
|
|
|
402 for (;;)
|
|
|
403 {
|
|
|
404 struct fn_decl *fn;
|
|
|
405 if (hash_tab[i] == 0)
|
|
|
406 return NULL;
|
|
|
407 fn = &std_protos[hash_tab[i]];
|
|
|
408 if ((int) strlen (fn->fname) == name_length
|
|
|
409 && strncmp (fn->fname, name, name_length) == 0)
|
|
|
410 return fn;
|
|
|
411 i = (i+1) % HASH_SIZE;
|
|
|
412 gcc_assert (i != i0);
|
|
|
413 }
|
|
|
414 }
|
|
|
415
|
|
|
416 char *inc_filename;
|
|
|
417 int inc_filename_length;
|
|
|
418 FILE *outf;
|
|
|
419 sstring line;
|
|
|
420
|
|
|
421 int lbrac_line, rbrac_line;
|
|
|
422
|
|
|
423 int required_unseen_count = 0;
|
|
|
424 int required_other = 0;
|
|
|
425
|
|
|
426 static void
|
|
|
427 write_lbrac (void)
|
|
|
428 {
|
|
|
429 if (partial_count)
|
|
|
430 {
|
|
|
431 fprintf (outf, "#ifndef _PARAMS\n");
|
|
|
432 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
|
|
|
433 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
|
|
|
434 fprintf (outf, "#else\n");
|
|
|
435 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
|
|
|
436 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
|
|
|
437 }
|
|
|
438 }
|
|
|
439
|
|
|
440 struct partial_proto
|
|
|
441 {
|
|
|
442 struct partial_proto *next;
|
|
|
443 struct fn_decl *fn;
|
|
|
444 int line_seen;
|
|
|
445 };
|
|
|
446
|
|
|
447 struct partial_proto *partial_proto_list = NULL;
|
|
|
448
|
|
|
449 struct partial_proto required_dummy_proto, seen_dummy_proto;
|
|
|
450 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
|
|
|
451 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
|
|
|
452 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
|
|
|
453 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
|
|
|
454
|
|
|
455 static void
|
|
|
456 recognized_macro (const char *fname)
|
|
|
457 {
|
|
|
458 /* The original include file defines fname as a macro. */
|
|
|
459 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
|
|
|
460
|
|
|
461 /* Since fname is a macro, don't require a prototype for it. */
|
|
|
462 if (fn)
|
|
|
463 {
|
|
|
464 if (REQUIRED (fn))
|
|
|
465 required_unseen_count--;
|
|
|
466 SET_SEEN (fn);
|
|
|
467 }
|
|
|
468
|
|
|
469 switch (special_file_handling)
|
|
|
470 {
|
|
|
471 case errno_h:
|
|
|
472 if (strcmp (fname, "errno") == 0 && !seen_errno)
|
|
|
473 seen_errno = 1, required_other--;
|
|
|
474 break;
|
|
|
475 case stdlib_h:
|
|
|
476 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
|
|
|
477 seen_EXIT_FAILURE = 1, required_other--;
|
|
|
478 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
|
|
|
479 seen_EXIT_SUCCESS = 1, required_other--;
|
|
|
480 break;
|
|
|
481 case sys_stat_h:
|
|
|
482 if (fname[0] == 'S' && fname[1] == '_')
|
|
|
483 {
|
|
|
484 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
|
|
|
485 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
|
|
|
486 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
|
|
|
487 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
|
|
|
488 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
|
|
|
489 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
|
|
|
490 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
|
|
|
491 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
|
|
|
492 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
|
|
|
493 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
|
|
|
494 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
|
|
|
495 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
|
|
|
496 }
|
|
|
497 break;
|
|
|
498
|
|
|
499 default:
|
|
|
500 break;
|
|
|
501 }
|
|
|
502 }
|
|
|
503
|
|
|
504 void
|
|
|
505 recognized_extern (const cpp_token *name)
|
|
|
506 {
|
|
|
507 switch (special_file_handling)
|
|
|
508 {
|
|
|
509 case errno_h:
|
|
|
510 if (cpp_ideq (name, "errno"))
|
|
|
511 seen_errno = 1, required_other--;
|
|
|
512 break;
|
|
|
513
|
|
|
514 default:
|
|
|
515 break;
|
|
|
516 }
|
|
|
517 }
|
|
|
518
|
|
|
519 /* Called by scan_decls if it saw a function definition for a function
|
|
|
520 named FNAME. KIND is 'I' for an inline function; 'F' if a normal
|
|
|
521 function declaration preceded by 'extern "C"' (or nested inside
|
|
|
522 'extern "C"' braces); or 'f' for other function declarations. */
|
|
|
523
|
|
|
524 void
|
|
|
525 recognized_function (const cpp_token *fname, unsigned int line, int kind,
|
|
|
526 int have_arg_list)
|
|
|
527 {
|
|
|
528 struct partial_proto *partial;
|
|
|
529 int i;
|
|
|
530 struct fn_decl *fn;
|
|
|
531
|
|
|
532 fn = lookup_std_proto ((const char *) NODE_NAME (fname->val.node),
|
|
|
533 NODE_LEN (fname->val.node));
|
|
|
534
|
|
|
535 /* Remove the function from the list of required function. */
|
|
|
536 if (fn)
|
|
|
537 {
|
|
|
538 if (REQUIRED (fn))
|
|
|
539 required_unseen_count--;
|
|
|
540 SET_SEEN (fn);
|
|
|
541 }
|
|
|
542
|
|
|
543 /* If we have a full prototype, we're done. */
|
|
|
544 if (have_arg_list)
|
|
|
545 return;
|
|
|
546
|
|
|
547 if (kind == 'I') /* don't edit inline function */
|
|
|
548 return;
|
|
|
549
|
|
|
550 /* If the partial prototype was included from some other file,
|
|
|
551 we don't need to patch it up (in this run). */
|
|
|
552 i = strlen (cur_file);
|
|
|
553 if (i < inc_filename_length
|
|
|
554 || strcmp (inc_filename, cur_file + (i - inc_filename_length)) != 0)
|
|
|
555 return;
|
|
|
556
|
|
|
557 if (fn == NULL)
|
|
|
558 return;
|
|
|
559 if (fn->params[0] == '\0')
|
|
|
560 return;
|
|
|
561
|
|
|
562 /* We only have a partial function declaration,
|
|
|
563 so remember that we have to add a complete prototype. */
|
|
|
564 partial_count++;
|
|
|
565 partial
|
|
|
566 = (struct partial_proto *)
|
|
|
567 obstack_alloc (&scan_file_obstack,
|
|
|
568 sizeof (struct partial_proto));
|
|
|
569 partial->line_seen = line;
|
|
|
570 partial->fn = fn;
|
|
|
571 fn->partial = partial;
|
|
|
572 partial->next = partial_proto_list;
|
|
|
573 partial_proto_list = partial;
|
|
|
574 if (verbose)
|
|
|
575 {
|
|
|
576 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
|
|
|
577 inc_filename, fn->fname);
|
|
|
578 }
|
|
|
579 }
|
|
|
580
|
|
|
581 /* For any name in NAMES that is defined as a macro,
|
|
|
582 call recognized_macro on it. */
|
|
|
583
|
|
|
584 static void
|
|
|
585 check_macro_names (cpp_reader *pfile, namelist names)
|
|
|
586 {
|
|
|
587 size_t len;
|
|
|
588 while (*names)
|
|
|
589 {
|
|
|
590 len = strlen (names);
|
|
|
591 if (cpp_defined (pfile, (const unsigned char *)names, len))
|
|
|
592 recognized_macro (names);
|
|
|
593 names += len + 1;
|
|
|
594 }
|
|
|
595 }
|
|
|
596
|
|
|
597 static void
|
|
|
598 cb_file_change (cpp_reader *pfile ATTRIBUTE_UNUSED,
|
|
|
599 const struct line_map *map)
|
|
|
600 {
|
|
|
601 /* Just keep track of current file name. */
|
|
|
602 cur_file = map == NULL ? NULL : map->to_file;
|
|
|
603 }
|
|
|
604
|
|
|
605 static void
|
|
|
606 read_scan_file (char *in_fname, int argc, char **argv)
|
|
|
607 {
|
|
|
608 cpp_reader *scan_in;
|
|
|
609 cpp_callbacks *cb;
|
|
|
610 cpp_options *options;
|
|
|
611 struct fn_decl *fn;
|
|
|
612 int i, strings_processed;
|
|
|
613 struct symbol_list *cur_symbols;
|
|
|
614
|
|
|
615 obstack_init (&scan_file_obstack);
|
|
|
616
|
|
|
617 linemap_init (&line_table);
|
|
|
618 scan_in = cpp_create_reader (CLK_GNUC89, NULL, &line_table);
|
|
|
619 cb = cpp_get_callbacks (scan_in);
|
|
|
620 cb->file_change = cb_file_change;
|
|
|
621
|
|
|
622 /* We are going to be scanning a header file out of its proper context,
|
|
|
623 so ignore warnings and errors. */
|
|
|
624 options = cpp_get_options (scan_in);
|
|
|
625 options->inhibit_warnings = 1;
|
|
|
626 options->inhibit_errors = 1;
|
|
|
627 cpp_post_options (scan_in);
|
|
|
628
|
|
|
629 if (!cpp_read_main_file (scan_in, in_fname))
|
|
|
630 exit (FATAL_EXIT_CODE);
|
|
|
631
|
|
|
632 cpp_change_file (scan_in, LC_RENAME, "<built-in>");
|
|
|
633 cpp_init_builtins (scan_in, true);
|
|
|
634 cpp_change_file (scan_in, LC_RENAME, in_fname);
|
|
|
635
|
|
|
636 /* Process switches after builtins so -D can override them. */
|
|
|
637 for (i = 0; i < argc; i += strings_processed)
|
|
|
638 {
|
|
|
639 strings_processed = 0;
|
|
|
640 if (argv[i][0] == '-')
|
|
|
641 {
|
|
|
642 if (argv[i][1] == 'I')
|
|
|
643 {
|
|
|
644 if (argv[i][2] != '\0')
|
|
|
645 {
|
|
|
646 strings_processed = 1;
|
|
|
647 add_path (xstrdup (argv[i] + 2), BRACKET, false, false);
|
|
|
648 }
|
|
|
649 else if (i + 1 != argc)
|
|
|
650 {
|
|
|
651 strings_processed = 2;
|
|
|
652 add_path (xstrdup (argv[i + 1]), BRACKET, false, false);
|
|
|
653 }
|
|
|
654 }
|
|
|
655 else if (argv[i][1] == 'D')
|
|
|
656 {
|
|
|
657 if (argv[i][2] != '\0')
|
|
|
658 strings_processed = 1, cpp_define (scan_in, argv[i] + 2);
|
|
|
659 else if (i + 1 != argc)
|
|
|
660 strings_processed = 2, cpp_define (scan_in, argv[i + 1]);
|
|
|
661 }
|
|
|
662 }
|
|
|
663
|
|
|
664 if (strings_processed == 0)
|
|
|
665 break;
|
|
|
666 }
|
|
|
667
|
|
|
668 if (i < argc)
|
|
|
669 cpp_error (scan_in, CPP_DL_ERROR, "invalid option `%s'", argv[i]);
|
|
|
670 if (cpp_errors (scan_in))
|
|
|
671 exit (FATAL_EXIT_CODE);
|
|
|
672
|
|
|
673 register_include_chains (scan_in, NULL /* sysroot */, NULL /* iprefix */,
|
|
|
674 NULL /* imultilib */, true /* stdinc */,
|
|
|
675 false /* cxx_stdinc */, false /* verbose */);
|
|
|
676
|
|
|
677 /* We are scanning a system header, so mark it as such. */
|
|
|
678 cpp_make_system_header (scan_in, 1, 0);
|
|
|
679
|
|
|
680 scan_decls (scan_in, argc, argv);
|
|
|
681 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
|
|
|
682 check_macro_names (scan_in, cur_symbols->names);
|
|
|
683
|
|
|
684 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
|
|
|
685 If so, those functions are also required. */
|
|
|
686 if (special_file_handling == stdio_h
|
|
|
687 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
|
|
|
688 {
|
|
|
689 unsigned char getchar_call[] = "getchar();\n";
|
|
|
690 int seen_filbuf = 0;
|
|
|
691
|
|
|
692 /* Scan the macro expansion of "getchar();". */
|
|
|
693 cpp_push_buffer (scan_in, getchar_call, sizeof(getchar_call) - 1,
|
|
|
694 /* from_stage3 */ true);
|
|
|
695 for (;;)
|
|
|
696 {
|
|
|
697 const cpp_token *t = cpp_get_token (scan_in);
|
|
|
698
|
|
|
699 if (t->type == CPP_EOF)
|
|
|
700 break;
|
|
|
701 else if (cpp_ideq (t, "_filbuf"))
|
|
|
702 seen_filbuf++;
|
|
|
703 }
|
|
|
704
|
|
|
705 if (seen_filbuf)
|
|
|
706 {
|
|
|
707 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
|
|
|
708 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
|
|
|
709 int need_flsbuf
|
|
|
710 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
|
|
|
711
|
|
|
712 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
|
|
|
713 if (need_filbuf + need_flsbuf)
|
|
|
714 {
|
|
|
715 const char *new_list;
|
|
|
716 if (need_filbuf)
|
|
|
717 SET_REQUIRED (fn);
|
|
|
718 if (need_flsbuf)
|
|
|
719 SET_REQUIRED (flsbuf_fn);
|
|
|
720 if (need_flsbuf && need_filbuf)
|
|
|
721 new_list = "_filbuf\0_flsbuf\0";
|
|
|
722 else if (need_flsbuf)
|
|
|
723 new_list = "_flsbuf\0";
|
|
|
724 else /* if (need_flsbuf) */
|
|
|
725 new_list = "_filbuf\0";
|
|
|
726 add_symbols (ANSI_SYMBOL, new_list);
|
|
|
727 required_unseen_count += need_filbuf + need_flsbuf;
|
|
|
728 }
|
|
|
729 }
|
|
|
730 }
|
|
|
731
|
|
|
732 if (required_unseen_count + partial_count + required_other == 0)
|
|
|
733 {
|
|
|
734 if (verbose)
|
|
|
735 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
|
|
|
736 exit (SUCCESS_EXIT_CODE);
|
|
|
737 }
|
|
|
738 if (!verbose)
|
|
|
739 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
|
|
|
740 else
|
|
|
741 {
|
|
|
742 if (required_unseen_count)
|
|
|
743 fprintf (stderr, "%s: %d missing function declarations.\n",
|
|
|
744 inc_filename, required_unseen_count);
|
|
|
745 if (partial_count)
|
|
|
746 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
|
|
|
747 inc_filename, partial_count);
|
|
|
748 }
|
|
|
749 }
|
|
|
750
|
|
|
751 static void
|
|
|
752 write_rbrac (void)
|
|
|
753 {
|
|
|
754 struct fn_decl *fn;
|
|
|
755 const char *cptr;
|
|
|
756 struct symbol_list *cur_symbols;
|
|
|
757
|
|
|
758 if (required_unseen_count)
|
|
|
759 {
|
|
|
760 #ifdef NO_IMPLICIT_EXTERN_C
|
|
|
761 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
|
|
|
762 #endif
|
|
|
763 }
|
|
|
764
|
|
|
765 /* Now we print out prototypes for those functions that we haven't seen. */
|
|
|
766 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
|
|
|
767 {
|
|
|
768 int if_was_emitted = 0;
|
|
|
769 int name_len;
|
|
|
770 cptr = cur_symbols->names;
|
|
|
771 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
|
|
|
772 {
|
|
|
773 int macro_protect = 0;
|
|
|
774
|
|
|
775 if (cur_symbols->flags & MACRO_SYMBOL)
|
|
|
776 continue;
|
|
|
777
|
|
|
778 fn = lookup_std_proto (cptr, name_len);
|
|
|
779 if (fn == NULL || !REQUIRED (fn))
|
|
|
780 continue;
|
|
|
781
|
|
|
782 if (!if_was_emitted)
|
|
|
783 {
|
|
|
784 /* what about curses. ??? or _flsbuf/_filbuf ??? */
|
|
|
785 if (cur_symbols->flags & ANSI_SYMBOL)
|
|
|
786 fprintf (outf,
|
|
|
787 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
|
|
|
788 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
|
|
|
789 fprintf (outf,
|
|
|
790 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
|
|
|
791 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
|
|
|
792 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
|
|
|
793 else if (cur_symbols->flags & XOPEN_SYMBOL)
|
|
|
794 {
|
|
|
795 fprintf (outf,
|
|
|
796 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
|
|
|
797 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
|
|
|
798 }
|
|
|
799 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
|
|
|
800 {
|
|
|
801 fprintf (outf,
|
|
|
802 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
|
|
|
803 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
|
|
|
804 }
|
|
|
805 else
|
|
|
806 {
|
|
|
807 fatal ("internal error for function %s", fn->fname);
|
|
|
808 }
|
|
|
809 if_was_emitted = 1;
|
|
|
810 }
|
|
|
811
|
|
|
812 /* In the case of memmove, protect in case the application
|
|
|
813 defines it as a macro before including the header. */
|
|
|
814 if (!strcmp (fn->fname, "memmove")
|
|
|
815 || !strcmp (fn->fname, "putc")
|
|
|
816 || !strcmp (fn->fname, "getc")
|
|
|
817 || !strcmp (fn->fname, "vprintf")
|
|
|
818 || !strcmp (fn->fname, "vfprintf")
|
|
|
819 || !strcmp (fn->fname, "vsprintf")
|
|
|
820 || !strcmp (fn->fname, "rewinddir")
|
|
|
821 || !strcmp (fn->fname, "abort"))
|
|
|
822 macro_protect = 1;
|
|
|
823
|
|
|
824 if (macro_protect)
|
|
|
825 fprintf (outf, "#ifndef %s\n", fn->fname);
|
|
|
826 fprintf (outf, "extern %s %s (%s);\n",
|
|
|
827 fn->rtype, fn->fname, fn->params);
|
|
|
828 if (macro_protect)
|
|
|
829 fprintf (outf, "#endif\n");
|
|
|
830 }
|
|
|
831 if (if_was_emitted)
|
|
|
832 fprintf (outf,
|
|
|
833 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
|
|
|
834 }
|
|
|
835 if (required_unseen_count)
|
|
|
836 {
|
|
|
837 #ifdef NO_IMPLICIT_EXTERN_C
|
|
|
838 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
|
|
|
839 #endif
|
|
|
840 }
|
|
|
841
|
|
|
842 switch (special_file_handling)
|
|
|
843 {
|
|
|
844 case errno_h:
|
|
|
845 if (!seen_errno)
|
|
|
846 fprintf (outf, "extern int errno;\n");
|
|
|
847 break;
|
|
|
848 case stdlib_h:
|
|
|
849 if (!seen_EXIT_FAILURE)
|
|
|
850 fprintf (outf, "#define EXIT_FAILURE 1\n");
|
|
|
851 if (!seen_EXIT_SUCCESS)
|
|
|
852 fprintf (outf, "#define EXIT_SUCCESS 0\n");
|
|
|
853 break;
|
|
|
854 case sys_stat_h:
|
|
|
855 if (!seen_S_ISBLK && seen_S_IFBLK)
|
|
|
856 fprintf (outf,
|
|
|
857 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
|
|
|
858 if (!seen_S_ISCHR && seen_S_IFCHR)
|
|
|
859 fprintf (outf,
|
|
|
860 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
|
|
|
861 if (!seen_S_ISDIR && seen_S_IFDIR)
|
|
|
862 fprintf (outf,
|
|
|
863 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
|
|
|
864 if (!seen_S_ISFIFO && seen_S_IFIFO)
|
|
|
865 fprintf (outf,
|
|
|
866 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
|
|
|
867 if (!seen_S_ISLNK && seen_S_IFLNK)
|
|
|
868 fprintf (outf,
|
|
|
869 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
|
|
|
870 if (!seen_S_ISREG && seen_S_IFREG)
|
|
|
871 fprintf (outf,
|
|
|
872 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
|
|
|
873 break;
|
|
|
874
|
|
|
875 default:
|
|
|
876 break;
|
|
|
877 }
|
|
|
878
|
|
|
879 }
|
|
|
880
|
|
|
881 /* Returns 1 iff the file is properly protected from multiple inclusion:
|
|
|
882 #ifndef PROTECT_NAME
|
|
|
883 #define PROTECT_NAME
|
|
|
884 #endif
|
|
|
885
|
|
|
886 */
|
|
|
887
|
|
|
888 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
|
|
|
889 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
|
|
|
890
|
|
|
891 static int
|
|
|
892 inf_skip_spaces (int c)
|
|
|
893 {
|
|
|
894 for (;;)
|
|
|
895 {
|
|
|
896 if (c == ' ' || c == '\t')
|
|
|
897 c = INF_GET ();
|
|
|
898 else if (c == '/')
|
|
|
899 {
|
|
|
900 c = INF_GET ();
|
|
|
901 if (c != '*')
|
|
|
902 {
|
|
|
903 (void) INF_UNGET (c);
|
|
|
904 return '/';
|
|
|
905 }
|
|
|
906 c = INF_GET ();
|
|
|
907 for (;;)
|
|
|
908 {
|
|
|
909 if (c == EOF)
|
|
|
910 return EOF;
|
|
|
911 else if (c != '*')
|
|
|
912 {
|
|
|
913 if (c == '\n')
|
|
|
914 source_lineno++, lineno++;
|
|
|
915 c = INF_GET ();
|
|
|
916 }
|
|
|
917 else if ((c = INF_GET ()) == '/')
|
|
|
918 return INF_GET ();
|
|
|
919 }
|
|
|
920 }
|
|
|
921 else
|
|
|
922 break;
|
|
|
923 }
|
|
|
924 return c;
|
|
|
925 }
|
|
|
926
|
|
|
927 /* Read into STR from inf_buffer upto DELIM. */
|
|
|
928
|
|
|
929 static int
|
|
|
930 inf_read_upto (sstring *str, int delim)
|
|
|
931 {
|
|
|
932 int ch;
|
|
|
933 for (;;)
|
|
|
934 {
|
|
|
935 ch = INF_GET ();
|
|
|
936 if (ch == EOF || ch == delim)
|
|
|
937 break;
|
|
|
938 SSTRING_PUT (str, ch);
|
|
|
939 }
|
|
|
940 MAKE_SSTRING_SPACE (str, 1);
|
|
|
941 *str->ptr = 0;
|
|
|
942 return ch;
|
|
|
943 }
|
|
|
944
|
|
|
945 static int
|
|
|
946 inf_scan_ident (sstring *s, int c)
|
|
|
947 {
|
|
|
948 s->ptr = s->base;
|
|
|
949 if (ISIDST (c))
|
|
|
950 {
|
|
|
951 for (;;)
|
|
|
952 {
|
|
|
953 SSTRING_PUT (s, c);
|
|
|
954 c = INF_GET ();
|
|
|
955 if (c == EOF || !(ISIDNUM (c)))
|
|
|
956 break;
|
|
|
957 }
|
|
|
958 }
|
|
|
959 MAKE_SSTRING_SPACE (s, 1);
|
|
|
960 *s->ptr = 0;
|
|
|
961 return c;
|
|
|
962 }
|
|
|
963
|
|
|
964 /* Returns 1 if the file is correctly protected against multiple
|
|
|
965 inclusion, setting *ifndef_line to the line number of the initial #ifndef
|
|
|
966 and setting *endif_line to the final #endif.
|
|
|
967 Otherwise return 0. */
|
|
|
968
|
|
|
969 static int
|
|
|
970 check_protection (int *ifndef_line, int *endif_line)
|
|
|
971 {
|
|
|
972 int c;
|
|
|
973 int if_nesting = 1; /* Level of nesting of #if's */
|
|
|
974 char *protect_name = NULL; /* Identifier following initial #ifndef */
|
|
|
975 int define_seen = 0;
|
|
|
976
|
|
|
977 /* Skip initial white space (including comments). */
|
|
|
978 for (;; lineno++)
|
|
|
979 {
|
|
|
980 c = inf_skip_spaces (' ');
|
|
|
981 if (c == EOF)
|
|
|
982 return 0;
|
|
|
983 if (c != '\n')
|
|
|
984 break;
|
|
|
985 }
|
|
|
986 if (c != '#')
|
|
|
987 return 0;
|
|
|
988 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
|
|
|
989 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
|
|
|
990 return 0;
|
|
|
991
|
|
|
992 /* So far so good: We've seen an initial #ifndef. */
|
|
|
993 *ifndef_line = lineno;
|
|
|
994 c = inf_scan_ident (&buf, inf_skip_spaces (c));
|
|
|
995 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
|
|
|
996 return 0;
|
|
|
997 protect_name = xstrdup (buf.base);
|
|
|
998
|
|
|
999 (void) INF_UNGET (c);
|
|
|
1000 c = inf_read_upto (&buf, '\n');
|
|
|
1001 if (c == EOF)
|
|
|
1002 return 0;
|
|
|
1003 lineno++;
|
|
|
1004
|
|
|
1005 for (;;)
|
|
|
1006 {
|
|
|
1007 c = inf_skip_spaces (' ');
|
|
|
1008 if (c == EOF)
|
|
|
1009 return 0;
|
|
|
1010 if (c == '\n')
|
|
|
1011 {
|
|
|
1012 lineno++;
|
|
|
1013 continue;
|
|
|
1014 }
|
|
|
1015 if (c != '#')
|
|
|
1016 goto skip_to_eol;
|
|
|
1017 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
|
|
|
1018 if (SSTRING_LENGTH (&buf) == 0)
|
|
|
1019 ;
|
|
|
1020 else if (!strcmp (buf.base, "ifndef")
|
|
|
1021 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
|
|
|
1022 {
|
|
|
1023 if_nesting++;
|
|
|
1024 }
|
|
|
1025 else if (!strcmp (buf.base, "endif"))
|
|
|
1026 {
|
|
|
1027 if_nesting--;
|
|
|
1028 if (if_nesting == 0)
|
|
|
1029 break;
|
|
|
1030 }
|
|
|
1031 else if (!strcmp (buf.base, "else"))
|
|
|
1032 {
|
|
|
1033 if (if_nesting == 1)
|
|
|
1034 return 0;
|
|
|
1035 }
|
|
|
1036 else if (!strcmp (buf.base, "define"))
|
|
|
1037 {
|
|
|
1038 c = inf_skip_spaces (c);
|
|
|
1039 c = inf_scan_ident (&buf, c);
|
|
|
1040 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
|
|
|
1041 define_seen = 1;
|
|
|
1042 }
|
|
|
1043 skip_to_eol:
|
|
|
1044 for (;;)
|
|
|
1045 {
|
|
|
1046 if (c == '\n' || c == EOF)
|
|
|
1047 break;
|
|
|
1048 c = INF_GET ();
|
|
|
1049 }
|
|
|
1050 if (c == EOF)
|
|
|
1051 return 0;
|
|
|
1052 lineno++;
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 if (!define_seen)
|
|
|
1056 return 0;
|
|
|
1057 *endif_line = lineno;
|
|
|
1058 /* Skip final white space (including comments). */
|
|
|
1059 for (;;)
|
|
|
1060 {
|
|
|
1061 c = inf_skip_spaces (' ');
|
|
|
1062 if (c == EOF)
|
|
|
1063 break;
|
|
|
1064 if (c != '\n')
|
|
|
1065 return 0;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 return 1;
|
|
|
1069 }
|
|
|
1070
|
|
|
1071 extern int main (int, char **);
|
|
|
1072
|
|
|
1073 int
|
|
|
1074 main (int argc, char **argv)
|
|
|
1075 {
|
|
|
1076 int inf_fd;
|
|
|
1077 struct stat sbuf;
|
|
|
1078 int c;
|
|
|
1079 #ifdef FIXPROTO_IGNORE_LIST
|
|
|
1080 int i;
|
|
|
1081 #endif
|
|
|
1082 const char *cptr;
|
|
|
1083 int ifndef_line;
|
|
|
1084 int endif_line;
|
|
|
1085 long to_read;
|
|
|
1086 long int inf_size;
|
|
|
1087 struct symbol_list *cur_symbols;
|
|
|
1088
|
|
|
1089 progname = "fix-header";
|
|
|
1090 if (argv[0] && argv[0][0])
|
|
|
1091 {
|
|
|
1092 char *p;
|
|
|
1093
|
|
|
1094 progname = 0;
|
|
|
1095 for (p = argv[0]; *p; p++)
|
|
|
1096 if (*p == '/')
|
|
|
1097 progname = p;
|
|
|
1098 progname = progname ? progname+1 : argv[0];
|
|
|
1099 }
|
|
|
1100
|
|
|
1101 if (argc < 4)
|
|
|
1102 {
|
|
|
1103 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
|
|
|
1104 progname);
|
|
|
1105 exit (FATAL_EXIT_CODE);
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 inc_filename = argv[1];
|
|
|
1109 inc_filename_length = strlen (inc_filename);
|
|
|
1110
|
|
|
1111 #ifdef FIXPROTO_IGNORE_LIST
|
|
|
1112 for (i = 0; files_to_ignore[i] != NULL; i++)
|
|
|
1113 {
|
|
|
1114 const char *const ignore_name = files_to_ignore[i];
|
|
|
1115 int ignore_len = strlen (ignore_name);
|
|
|
1116 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
|
|
|
1117 {
|
|
|
1118 if (ignore_name[ignore_len-1] == '/'
|
|
|
1119 || inc_filename[ignore_len] == '\0')
|
|
|
1120 {
|
|
|
1121 if (verbose)
|
|
|
1122 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
|
|
|
1123 exit (SUCCESS_EXIT_CODE);
|
|
|
1124 }
|
|
|
1125 }
|
|
|
1126
|
|
|
1127 }
|
|
|
1128 #endif
|
|
|
1129
|
|
|
1130 if (strcmp (inc_filename, "sys/stat.h") == 0)
|
|
|
1131 special_file_handling = sys_stat_h;
|
|
|
1132 else if (strcmp (inc_filename, "errno.h") == 0)
|
|
|
1133 special_file_handling = errno_h, required_other++;
|
|
|
1134 else if (strcmp (inc_filename, "stdlib.h") == 0)
|
|
|
1135 special_file_handling = stdlib_h, required_other+=2;
|
|
|
1136 else if (strcmp (inc_filename, "stdio.h") == 0)
|
|
|
1137 special_file_handling = stdio_h;
|
|
|
1138 include_entry = std_include_table;
|
|
|
1139 while (include_entry->name != NULL
|
|
|
1140 && ((strcmp (include_entry->name, CONTINUED) == 0)
|
|
|
1141 || strcmp (inc_filename, include_entry->name) != 0))
|
|
|
1142 include_entry++;
|
|
|
1143
|
|
|
1144 if (include_entry->name != NULL)
|
|
|
1145 {
|
|
|
1146 const struct std_include_entry *entry;
|
|
|
1147 cur_symbol_table_size = 0;
|
|
|
1148 for (entry = include_entry; ;)
|
|
|
1149 {
|
|
|
1150 if (entry->flags)
|
|
|
1151 add_symbols (entry->flags, entry->names);
|
|
|
1152 entry++;
|
|
|
1153 if (!entry->name || strcmp (entry->name, CONTINUED) != 0)
|
|
|
1154 break;
|
|
|
1155 }
|
|
|
1156 }
|
|
|
1157 else
|
|
|
1158 symbol_table[0].names = NULL;
|
|
|
1159
|
|
|
1160 /* Count and mark the prototypes required for this include file. */
|
|
|
1161 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
|
|
|
1162 {
|
|
|
1163 int name_len;
|
|
|
1164 if (cur_symbols->flags & MACRO_SYMBOL)
|
|
|
1165 continue;
|
|
|
1166 cptr = cur_symbols->names;
|
|
|
1167 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
|
|
|
1168 {
|
|
|
1169 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
|
|
|
1170 required_unseen_count++;
|
|
|
1171 if (fn == NULL)
|
|
|
1172 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
|
|
|
1173 else
|
|
|
1174 SET_REQUIRED (fn);
|
|
|
1175 }
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 read_scan_file (argv[2], argc - 4, argv + 4);
|
|
|
1179
|
|
|
1180 inf_fd = open (argv[2], O_RDONLY, 0666);
|
|
|
1181 if (inf_fd < 0)
|
|
|
1182 {
|
|
|
1183 fprintf (stderr, "%s: Cannot open '%s' for reading -",
|
|
|
1184 progname, argv[2]);
|
|
|
1185 perror (NULL);
|
|
|
1186 exit (FATAL_EXIT_CODE);
|
|
|
1187 }
|
|
|
1188 if (fstat (inf_fd, &sbuf) < 0)
|
|
|
1189 {
|
|
|
1190 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
|
|
|
1191 perror (NULL);
|
|
|
1192 exit (FATAL_EXIT_CODE);
|
|
|
1193 }
|
|
|
1194 inf_size = sbuf.st_size;
|
|
|
1195 inf_buffer = XNEWVEC (char, inf_size + 2);
|
|
|
1196 inf_ptr = inf_buffer;
|
|
|
1197
|
|
|
1198 to_read = inf_size;
|
|
|
1199 while (to_read > 0)
|
|
|
1200 {
|
|
|
1201 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
|
|
|
1202 if (i < 0)
|
|
|
1203 {
|
|
|
1204 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
|
|
|
1205 perror (NULL);
|
|
|
1206 exit (FATAL_EXIT_CODE);
|
|
|
1207 }
|
|
|
1208 if (i == 0)
|
|
|
1209 {
|
|
|
1210 inf_size -= to_read;
|
|
|
1211 break;
|
|
|
1212 }
|
|
|
1213 to_read -= i;
|
|
|
1214 }
|
|
|
1215
|
|
|
1216 close (inf_fd);
|
|
|
1217
|
|
|
1218 /* Inf_size may have changed if read was short (as on VMS) */
|
|
|
1219 inf_buffer[inf_size] = '\n';
|
|
|
1220 inf_buffer[inf_size + 1] = '\0';
|
|
|
1221 inf_limit = inf_buffer + inf_size;
|
|
|
1222
|
|
|
1223 /* If file doesn't end with '\n', add one. */
|
|
|
1224 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
|
|
|
1225 inf_limit++;
|
|
|
1226
|
|
|
1227 unlink (argv[3]);
|
|
|
1228 outf = fopen (argv[3], "w");
|
|
|
1229 if (outf == NULL)
|
|
|
1230 {
|
|
|
1231 fprintf (stderr, "%s: Cannot open '%s' for writing -",
|
|
|
1232 progname, argv[3]);
|
|
|
1233 perror (NULL);
|
|
|
1234 exit (FATAL_EXIT_CODE);
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 lineno = 1;
|
|
|
1238
|
|
|
1239 if (check_protection (&ifndef_line, &endif_line))
|
|
|
1240 {
|
|
|
1241 lbrac_line = ifndef_line+1;
|
|
|
1242 rbrac_line = endif_line;
|
|
|
1243 }
|
|
|
1244 else
|
|
|
1245 {
|
|
|
1246 lbrac_line = 1;
|
|
|
1247 rbrac_line = -1;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 /* Reset input file. */
|
|
|
1251 inf_ptr = inf_buffer;
|
|
|
1252 lineno = 1;
|
|
|
1253
|
|
|
1254 for (;;)
|
|
|
1255 {
|
|
|
1256 if (lineno == lbrac_line)
|
|
|
1257 write_lbrac ();
|
|
|
1258 if (lineno == rbrac_line)
|
|
|
1259 write_rbrac ();
|
|
|
1260 for (;;)
|
|
|
1261 {
|
|
|
1262 struct fn_decl *fn;
|
|
|
1263 c = INF_GET ();
|
|
|
1264 if (c == EOF)
|
|
|
1265 break;
|
|
|
1266 if (ISIDST (c))
|
|
|
1267 {
|
|
|
1268 c = inf_scan_ident (&buf, c);
|
|
|
1269 (void) INF_UNGET (c);
|
|
|
1270 fputs (buf.base, outf);
|
|
|
1271 fn = lookup_std_proto (buf.base, strlen (buf.base));
|
|
|
1272 /* We only want to edit the declaration matching the one
|
|
|
1273 seen by scan-decls, as there can be multiple
|
|
|
1274 declarations, selected by #ifdef __STDC__ or whatever. */
|
|
|
1275 if (fn && fn->partial && fn->partial->line_seen == lineno)
|
|
|
1276 {
|
|
|
1277 c = inf_skip_spaces (' ');
|
|
|
1278 if (c == EOF)
|
|
|
1279 break;
|
|
|
1280 if (c == '(')
|
|
|
1281 {
|
|
|
1282 c = inf_skip_spaces (' ');
|
|
|
1283 if (c == ')')
|
|
|
1284 {
|
|
|
1285 fprintf (outf, " _PARAMS((%s))", fn->params);
|
|
|
1286 }
|
|
|
1287 else
|
|
|
1288 {
|
|
|
1289 putc ('(', outf);
|
|
|
1290 (void) INF_UNGET (c);
|
|
|
1291 }
|
|
|
1292 }
|
|
|
1293 else
|
|
|
1294 fprintf (outf, " %c", c);
|
|
|
1295 }
|
|
|
1296 }
|
|
|
1297 else
|
|
|
1298 {
|
|
|
1299 putc (c, outf);
|
|
|
1300 if (c == '\n')
|
|
|
1301 break;
|
|
|
1302 }
|
|
|
1303 }
|
|
|
1304 if (c == EOF)
|
|
|
1305 break;
|
|
|
1306 lineno++;
|
|
|
1307 }
|
|
|
1308 if (rbrac_line < 0)
|
|
|
1309 write_rbrac ();
|
|
|
1310
|
|
|
1311 fclose (outf);
|
|
|
1312
|
|
|
1313 return 0;
|
|
|
1314 }
|
