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1 #! /usr/bin/python2
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2 import os.path
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3 import sys
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4 import shlex
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5 import re
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6
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7 from headerutils import *
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8
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9
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10 tabstop = 2
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11 padding = " "
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12 seen = { }
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13 output = list()
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14 summary = list()
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15 sawcore = False
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16
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17 # list of headers to emphasize
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18 highlight = list ()
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19
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20 bld_dir = ""
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21 # search path for headers
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22 incl_dirs = ["../include", "../libcpp/include", "common", "c-family", "c", "cp", "config" ]
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23 # extra search paths to look in *after* the directory the source file is in.
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24
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25 # append (1) to the end of the first line which includes INC in list INC.
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26 def append_1 (output, inc):
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27 for n,t in enumerate (output):
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28 idx = t.find(inc)
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29 if idx != -1:
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30 eos = idx + len (inc)
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31 t = t[:eos] + " (1)" + t[eos+1:]
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32 output[n] = t
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33 return
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34
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35 # These headers show up as duplicates in rtl.h due to conditional code arund the includes
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36 rtl_core = [ "machmode.h" , "signop.h" , "wide-int.h" , "double-int.h" , "real.h" , "fixed-value.h" , "statistics.h" , "vec.h" , "hash-table.h" , "hash-set.h" , "input.h" , "is-a.h" ]
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37
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38 def find_include_data (inc):
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39 global sawcore
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40 for x in incl_dirs:
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41 nm = x+"/"+inc
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42 if os.path.exists (nm):
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43 info = find_unique_include_list (nm)
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44 # rtl.h mimics coretypes for GENERATOR FILES, remove if coretypes.h seen.
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45 if inc == "coretypes.h":
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46 sawcore = True
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47 elif inc == "rtl.h" and sawcore:
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48 for i in rtl_core:
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49 if i in info:
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50 info.remove (i)
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51 return info
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52 return list()
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53
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54 def process_include (inc, indent):
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55 if inc[-2:] != ".h":
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56 return
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57 bname = os.path.basename (inc)
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58 if bname in highlight:
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59 arrow = " <<-------"
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60 if bname not in summary:
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61 summary.append (bname)
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62 else:
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63 arrow = ""
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64 if seen.get(inc) == None:
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65 seen[inc] = 1
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66 output.append (padding[:indent*tabstop] + bname + arrow)
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67 info = find_include_data (inc)
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68 for y in info:
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69 process_include (y, indent+1)
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70 else:
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71 seen[inc] += 1
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72 if (seen[inc] == 2):
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73 append_1(output, inc)
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74 output.append (padding[:indent*tabstop] + bname + " ("+str(seen[inc])+")" + arrow)
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75
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76
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77
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78 extradir = list()
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79 usage = False
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80 src = list()
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81
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82 for x in sys.argv[1:]:
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83 if x[0:2] == "-i":
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84 bld = x[2:]
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85 extradir.append (bld)
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86 elif x[0:2] == "-s":
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87 highlight.append (os.path.basename (x[2:]))
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88 elif x[0:2] == "-h":
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89 usage = True
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90 else:
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91 src.append (x)
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92
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93 if len(src) != 1:
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94 usage = True
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95 elif not os.path.exists (src[0]):
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96 print src[0] + ": Requested source file does not exist.\n"
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97 usage = True
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98
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99 if usage:
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100 print "show-headers [-idir] [-sfilen] file1 "
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101 print " "
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102 print " Show a hierarchical visual format how many times each header file"
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103 print " is included in a source file. Should be run from the source directory"
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104 print " files from find-include-depends"
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105 print " -s : search for a header, and point it out."
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106 print " -i : Specifies additonal directories to search for includes."
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107 sys.exit(0)
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108
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109
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110
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111 if extradir:
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112 incl_dirs = extradir + incl_dirs;
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113
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114 blddir = find_gcc_bld_dir ("../..")
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115
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116 if blddir:
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117 print "Using build directory: " + blddir
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118 incl_dirs.insert (0, blddir)
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119 else:
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120 print "Could not find a build directory, better results if you specify one with -i"
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121
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122 # search path is now ".", blddir, extradirs_from_-i, built_in_incl_dirs
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123 incl_dirs.insert (0, ".")
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124
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125 # if source is in a subdirectory, prepend the subdirectory to the search list
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126 x = src[0]
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127 srcpath = os.path.dirname(x)
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128 if srcpath:
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129 incl_dirs.insert (0, srcpath)
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130
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131 output = list()
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132 sawcore = False
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133
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134 data = open (x).read().splitlines()
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135 for line in data:
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136 d = find_pound_include (line, True, True)
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137 if d and d[-2:] == ".h":
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138 process_include (d, 1)
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139
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140 print "\n" + x
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141 for line in output:
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142 print line
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143
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144 if highlight:
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145 print " "
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146 for h in summary:
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147 print h + " is included by source file."
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148 for h in highlight:
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149 if h not in summary:
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150 print h + " is not included by source file."
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151
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