CbC/CbC_llvm: lib/LineEditor/LineEditor.cpp annotate

annotate lib/LineEditor/LineEditor.cpp @ 148:63bd29f05246

merged

author	Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date	Wed, 14 Aug 2019 19:46:37 +0900
parents	c2174574ed3a
children

rev	line source
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	1 //===-- LineEditor.cpp - line editor --------------------------------------===//
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	2 //
147 c2174574ed3a LLVM 10 Shinji KONO <kono@ie.u-ryukyu.ac.jp> parents: 120 diff changeset	3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
c2174574ed3a LLVM 10 Shinji KONO <kono@ie.u-ryukyu.ac.jp> parents: 120 diff changeset	4 // See https://llvm.org/LICENSE.txt for license information.
c2174574ed3a LLVM 10 Shinji KONO <kono@ie.u-ryukyu.ac.jp> parents: 120 diff changeset	5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	6 //
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	7 //===----------------------------------------------------------------------===//
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	8
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	9 #include "llvm/LineEditor/LineEditor.h"
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	10 #include "llvm/ADT/SmallString.h"
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	11 #include "llvm/Config/config.h"
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	12 #include "llvm/Support/Path.h"
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	13 #include "llvm/Support/raw_ostream.h"
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	14 #include <algorithm>
1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	15 #include <cassert>
1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	16 #include <cstdio>
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	17 #ifdef HAVE_LIBEDIT
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	18 #include <histedit.h>
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	19 #endif
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	20
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	21 using namespace llvm;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	22
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	23 std::string LineEditor::getDefaultHistoryPath(StringRef ProgName) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	24 SmallString<32> Path;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	25 if (sys::path::home_directory(Path)) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	26 sys::path::append(Path, "." + ProgName + "-history");
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	27 return Path.str();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	28 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	29 return std::string();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	30 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	31
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	32 LineEditor::CompleterConcept::~CompleterConcept() {}
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	33 LineEditor::ListCompleterConcept::~ListCompleterConcept() {}
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	34
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	35 std::string LineEditor::ListCompleterConcept::getCommonPrefix(
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	36 const std::vector<Completion> &Comps) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	37 assert(!Comps.empty());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	38
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	39 std::string CommonPrefix = Comps[0].TypedText;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	40 for (std::vector<Completion>::const_iterator I = Comps.begin() + 1,
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	41 E = Comps.end();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	42 I != E; ++I) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	43 size_t Len = std::min(CommonPrefix.size(), I->TypedText.size());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	44 size_t CommonLen = 0;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	45 for (; CommonLen != Len; ++CommonLen) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	46 if (CommonPrefix[CommonLen] != I->TypedText[CommonLen])
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	47 break;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	48 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	49 CommonPrefix.resize(CommonLen);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	50 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	51 return CommonPrefix;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	52 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	53
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	54 LineEditor::CompletionAction
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	55 LineEditor::ListCompleterConcept::complete(StringRef Buffer, size_t Pos) const {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	56 CompletionAction Action;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	57 std::vector<Completion> Comps = getCompletions(Buffer, Pos);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	58 if (Comps.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	59 Action.Kind = CompletionAction::AK_ShowCompletions;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	60 return Action;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	61 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	62
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	63 std::string CommonPrefix = getCommonPrefix(Comps);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	64
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	65 // If the common prefix is non-empty we can simply insert it. If there is a
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	66 // single completion, this will insert the full completion. If there is more
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	67 // than one, this might be enough information to jog the user's memory but if
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	68 // not the user can also hit tab again to see the completions because the
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	69 // common prefix will then be empty.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	70 if (CommonPrefix.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	71 Action.Kind = CompletionAction::AK_ShowCompletions;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	72 for (std::vector<Completion>::iterator I = Comps.begin(), E = Comps.end();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	73 I != E; ++I)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	74 Action.Completions.push_back(I->DisplayText);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	75 } else {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	76 Action.Kind = CompletionAction::AK_Insert;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	77 Action.Text = CommonPrefix;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	78 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	79
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	80 return Action;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	81 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	82
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	83 LineEditor::CompletionAction LineEditor::getCompletionAction(StringRef Buffer,
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	84 size_t Pos) const {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	85 if (!Completer) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	86 CompletionAction Action;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	87 Action.Kind = CompletionAction::AK_ShowCompletions;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	88 return Action;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	89 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	90
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	91 return Completer->complete(Buffer, Pos);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	92 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	93
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	94 #ifdef HAVE_LIBEDIT
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	95
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	96 // libedit-based implementation.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	97
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	98 struct LineEditor::InternalData {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	99 LineEditor *LE;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	100
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	101 History *Hist;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	102 EditLine *EL;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	103
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	104 unsigned PrevCount;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	105 std::string ContinuationOutput;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	106
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	107 FILE *Out;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	108 };
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	109
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	110 namespace {
1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	111
1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	112 const char ElGetPromptFn(EditLine EL) {
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	113 LineEditor::InternalData *Data;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	114 if (el_get(EL, EL_CLIENTDATA, &Data) == 0)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	115 return Data->LE->getPrompt().c_str();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	116 return "> ";
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	117 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	118
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	119 // Handles tab completion.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	120 //
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	121 // This function is really horrible. But since the alternative is to get into
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	122 // the line editor business, here we are.
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	123 unsigned char ElCompletionFn(EditLine *EL, int ch) {
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	124 LineEditor::InternalData *Data;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	125 if (el_get(EL, EL_CLIENTDATA, &Data) == 0) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	126 if (!Data->ContinuationOutput.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	127 // This is the continuation of the AK_ShowCompletions branch below.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	128 FILE *Out = Data->Out;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	129
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	130 // Print the required output (see below).
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	131 ::fwrite(Data->ContinuationOutput.c_str(),
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	132 Data->ContinuationOutput.size(), 1, Out);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	133
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	134 // Push a sequence of Ctrl-B characters to move the cursor back to its
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	135 // original position.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	136 std::string Prevs(Data->PrevCount, '\02');
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	137 ::el_push(EL, const_cast<char *>(Prevs.c_str()));
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	138
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	139 Data->ContinuationOutput.clear();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	140
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	141 return CC_REFRESH;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	142 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	143
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	144 const LineInfo *LI = ::el_line(EL);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	145 LineEditor::CompletionAction Action = Data->LE->getCompletionAction(
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	146 StringRef(LI->buffer, LI->lastchar - LI->buffer),
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	147 LI->cursor - LI->buffer);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	148 switch (Action.Kind) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	149 case LineEditor::CompletionAction::AK_Insert:
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	150 ::el_insertstr(EL, Action.Text.c_str());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	151 return CC_REFRESH;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	152
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	153 case LineEditor::CompletionAction::AK_ShowCompletions:
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	154 if (Action.Completions.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	155 return CC_REFRESH_BEEP;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	156 } else {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	157 // Push a Ctrl-E and a tab. The Ctrl-E causes libedit to move the cursor
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	158 // to the end of the line, so that when we emit a newline we will be on
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	159 // a new blank line. The tab causes libedit to call this function again
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	160 // after moving the cursor. There doesn't seem to be anything we can do
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	161 // from here to cause libedit to move the cursor immediately. This will
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	162 // break horribly if the user has rebound their keys, so for now we do
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	163 // not permit user rebinding.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	164 ::el_push(EL, const_cast<char *>("\05\t"));
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	165
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	166 // This assembles the output for the continuation block above.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	167 raw_string_ostream OS(Data->ContinuationOutput);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	168
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	169 // Move cursor to a blank line.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	170 OS << "\n";
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	171
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	172 // Emit the completions.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	173 for (std::vector<std::string>::iterator I = Action.Completions.begin(),
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	174 E = Action.Completions.end();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	175 I != E; ++I) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	176 OS << *I << "\n";
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	177 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	178
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	179 // Fool libedit into thinking nothing has changed. Reprint its prompt
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	180 // and the user input. Note that the cursor will remain at the end of
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	181 // the line after this.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	182 OS << Data->LE->getPrompt()
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	183 << StringRef(LI->buffer, LI->lastchar - LI->buffer);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	184
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	185 // This is the number of characters we need to tell libedit to go back:
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	186 // the distance between end of line and the original cursor position.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	187 Data->PrevCount = LI->lastchar - LI->cursor;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	188
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	189 return CC_REFRESH;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	190 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	191 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	192 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	193 return CC_ERROR;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	194 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	195
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	196 } // end anonymous namespace
1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	197
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	198 LineEditor::LineEditor(StringRef ProgName, StringRef HistoryPath, FILE *In,
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	199 FILE Out, FILE Err)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	200 : Prompt((ProgName + "> ").str()), HistoryPath(HistoryPath),
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	201 Data(new InternalData) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	202 if (HistoryPath.empty())
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	203 this->HistoryPath = getDefaultHistoryPath(ProgName);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	204
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	205 Data->LE = this;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	206 Data->Out = Out;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	207
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	208 Data->Hist = ::history_init();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	209 assert(Data->Hist);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	210
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	211 Data->EL = ::el_init(ProgName.str().c_str(), In, Out, Err);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	212 assert(Data->EL);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	213
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	214 ::el_set(Data->EL, EL_PROMPT, ElGetPromptFn);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	215 ::el_set(Data->EL, EL_EDITOR, "emacs");
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	216 ::el_set(Data->EL, EL_HIST, history, Data->Hist);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	217 ::el_set(Data->EL, EL_ADDFN, "tab_complete", "Tab completion function",
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	218 ElCompletionFn);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	219 ::el_set(Data->EL, EL_BIND, "\t", "tab_complete", NULL);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	220 ::el_set(Data->EL, EL_BIND, "^r", "em-inc-search-prev",
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	221 NULL); // Cycle through backwards search, entering string
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	222 ::el_set(Data->EL, EL_BIND, "^w", "ed-delete-prev-word",
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	223 NULL); // Delete previous word, behave like bash does.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	224 ::el_set(Data->EL, EL_BIND, "\033[3~", "ed-delete-next-char",
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	225 NULL); // Fix the delete key.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	226 ::el_set(Data->EL, EL_CLIENTDATA, Data.get());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	227
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	228 HistEvent HE;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	229 ::history(Data->Hist, &HE, H_SETSIZE, 800);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	230 ::history(Data->Hist, &HE, H_SETUNIQUE, 1);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	231 loadHistory();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	232 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	233
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	234 LineEditor::~LineEditor() {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	235 saveHistory();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	236
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	237 ::history_end(Data->Hist);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	238 ::el_end(Data->EL);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	239 ::fwrite("\n", 1, 1, Data->Out);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	240 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	241
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	242 void LineEditor::saveHistory() {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	243 if (!HistoryPath.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	244 HistEvent HE;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	245 ::history(Data->Hist, &HE, H_SAVE, HistoryPath.c_str());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	246 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	247 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	248
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	249 void LineEditor::loadHistory() {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	250 if (!HistoryPath.empty()) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	251 HistEvent HE;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	252 ::history(Data->Hist, &HE, H_LOAD, HistoryPath.c_str());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	253 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	254 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	255
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	256 Optional<std::string> LineEditor::readLine() const {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	257 // Call el_gets to prompt the user and read the user's input.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	258 int LineLen = 0;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	259 const char *Line = ::el_gets(Data->EL, &LineLen);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	260
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	261 // Either of these may mean end-of-file.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	262 if (!Line \|\| LineLen == 0)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	263 return Optional<std::string>();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	264
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	265 // Strip any newlines off the end of the string.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	266 while (LineLen > 0 &&
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	267 (Line[LineLen - 1] == '\n' \|\| Line[LineLen - 1] == '\r'))
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	268 --LineLen;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	269
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	270 HistEvent HE;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	271 if (LineLen > 0)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	272 ::history(Data->Hist, &HE, H_ENTER, Line);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	273
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	274 return std::string(Line, LineLen);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	275 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	276
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	277 #else // HAVE_LIBEDIT
77 54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	278
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	279 // Simple fgets-based implementation.
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	280
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	281 struct LineEditor::InternalData {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	282 FILE *In;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	283 FILE *Out;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	284 };
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	285
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	286 LineEditor::LineEditor(StringRef ProgName, StringRef HistoryPath, FILE *In,
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	287 FILE Out, FILE Err)
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	288 : Prompt((ProgName + "> ").str()), Data(new InternalData) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	289 Data->In = In;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	290 Data->Out = Out;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	291 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	292
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	293 LineEditor::~LineEditor() {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	294 ::fwrite("\n", 1, 1, Data->Out);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	295 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	296
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	297 void LineEditor::saveHistory() {}
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	298 void LineEditor::loadHistory() {}
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	299
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	300 Optional<std::string> LineEditor::readLine() const {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	301 ::fprintf(Data->Out, "%s", Prompt.c_str());
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	302
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	303 std::string Line;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	304 do {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	305 char Buf[64];
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	306 char *Res = ::fgets(Buf, sizeof(Buf), Data->In);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	307 if (!Res) {
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	308 if (Line.empty())
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	309 return Optional<std::string>();
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	310 else
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	311 return Line;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	312 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	313 Line.append(Buf);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	314 } while (Line.empty() \|\|
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	315 (Line[Line.size() - 1] != '\n' && Line[Line.size() - 1] != '\r'));
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	316
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	317 while (!Line.empty() &&
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	318 (Line[Line.size() - 1] == '\n' \|\| Line[Line.size() - 1] == '\r'))
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	319 Line.resize(Line.size() - 1);
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	320
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	321 return Line;
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	322 }
54457678186b LLVM 3.6 Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> parents: diff changeset	323
120 1172e4bd9c6f update 4.0.0 mir3636 parents: 77 diff changeset	324 #endif // HAVE_LIBEDIT

Mercurial > hg > CbC > CbC_llvm

annotate lib/LineEditor/LineEditor.cpp @ 148:63bd29f05246