Mercurial > hg > octave-lyh
annotate libinterp/corefcn/oct-procbuf.cc @ 17335:fe6518a1d87c
Move TeX symbol decoding into the lexer (bug #39831).
* libinterp/Makefile.am (BUILT_SOURCES): Add corefcn/oct-tex-symbols.cc.
(BUILT_DISTFILES): Add corefcn/oct-tex-lexer.ll and
corefcn/oct-tex-symbols.cc.
(EXTRA_DIST): Add corefcn/oct-tex-lexer.in.ll and
corefcn/oct-tex-symbols.in.
(ULT_DIST_SRC): Filter out corefcn/oct-tex-lexer.ll from DIST_SRC and
add corefcn/oct-tex-lexer.in.ll instead.
(CLEAN_FILES): Add corefcn/oct-tex-parser.output.
* libinterp/corefcn/modules.mk (corefcn/oct-tex-lexer.ll,
corefcn/oct-tex-symbols.cc): New rules to build the TeX lexer.
(corefcn/txt-eng.cc): Add dependency on corefcn/oct-tex-symbols.cc.
* libinterp/corefcn/oct-tex-lexer.in.ll: Renamed from oct-tex.lexer.ll.
Remove COMMAND state. Remove ID regex. Replace rules for symbols with
tag @SYMBOL_RULES@.
* libinterp/corefcn/oct-tex-parser.yy (ID, CMD, identifier): Remove
tokens.
(SYM, sym): New token and value.
(symbol_element): Build from SYM.
* libinterp/corefcn/oct-tex-symbols.in: New file with supported TeX
symbols and corresponding codes (unicode and MS symbols).
* libinterp/corefcn/txt-eng.h (class text_element_symbol): Make it
inherit from text_element.
(text_element_symbol::code): Removed member.
(text_element_symbol::symbol): New member.
(text_element_symbol::text_element_symbol): Adapt constructor.
(text_element_symbol::get_symbol): New method.
(text_element_symbol::get_symbol_code): Make const.
* libinterp/corefcn/txt-eng.cc (symbol_names, symbol_codes): Remove
static variables, now auto-generated from oct-tex-symbols.in.
(oct-tex-symbols.cc): New include.
(text_element_symbol::get_symbol_code): Change implementation to simply
index into auto-generated symbol_codes array.
* libinterp/corefcn/txt-eng-ft.cc
(ft_render::visit(text_element_symbol)): Don't use
text_element_symbol::string_value(), use
text_element_symbol::get_symbol() instead.
| author | Michael Goffioul <michael.goffioul@gmail.com> |
|---|---|
| date | Sat, 24 Aug 2013 14:27:09 -0400 |
| parents | 68fc671a9339 |
| children |
| rev | line source |
|---|---|
| 2094 | 1 /* |
| 2 | |
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3 Copyright (C) 1996-2012 John W. Eaton |
| 2094 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2094 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 2094 | 20 |
| 21 */ | |
| 22 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 #include <config.h> | |
| 25 #endif | |
| 26 | |
| 27 #include <cerrno> | |
| 28 | |
| 3503 | 29 #include <iostream> |
| 2094 | 30 |
| 31 #include <sys/types.h> | |
| 32 #include <unistd.h> | |
| 33 | |
| 3174 | 34 #include "lo-mappers.h" |
| 35 #include "lo-utils.h" | |
| 2094 | 36 #include "oct-procbuf.h" |
| 5453 | 37 #include "oct-syscalls.h" |
| 6726 | 38 #include "sysdep.h" |
| 3176 | 39 #include "variables.h" |
| 2094 | 40 |
| 3174 | 41 #include "defun.h" |
| 42 #include "gripes.h" | |
| 3308 | 43 #include "utils.h" |
| 3174 | 44 |
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45 #ifndef SHELL_PATH |
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46 #define SHELL_PATH "/bin/sh" |
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47 #endif |
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48 |
| 2094 | 49 // This class is based on the procbuf class from libg++, written by |
| 50 // Per Bothner, Copyright (C) 1993 Free Software Foundation. | |
| 51 | |
| 52 static octave_procbuf *octave_procbuf_list = 0; | |
| 53 | |
| 6094 | 54 #ifndef BUFSIZ |
| 55 #define BUFSIZ 1024 | |
| 56 #endif | |
| 57 | |
| 2094 | 58 octave_procbuf * |
| 59 octave_procbuf::open (const char *command, int mode) | |
| 60 { | |
| 6096 | 61 #if defined (__CYGWIN__) || defined (__MINGW32__) || defined (_MSC_VER) |
| 4472 | 62 |
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63 if (is_open ()) |
| 4472 | 64 return 0; |
| 65 | |
| 6726 | 66 f = octave_popen (command, (mode & std::ios::in) ? "r" : "w"); |
| 4472 | 67 |
| 68 if (! f) | |
| 69 return 0; | |
| 70 | |
| 71 // Oops... popen doesn't return the associated pid, so fake it for now | |
| 72 | |
| 73 proc_pid = 1; | |
| 74 | |
| 75 open_p = true; | |
| 76 | |
| 77 if (mode & std::ios::out) | |
| 6094 | 78 ::setvbuf (f, 0, _IOLBF, BUFSIZ); |
| 4472 | 79 |
| 80 return this; | |
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81 |
| 4472 | 82 #elif defined (HAVE_SYS_WAIT_H) |
| 2094 | 83 |
| 84 int pipe_fds[2]; | |
| 85 | |
| 3544 | 86 volatile int child_std_end = (mode & std::ios::in) ? 1 : 0; |
| 3156 | 87 |
| 3147 | 88 volatile int parent_end, child_end; |
| 2094 | 89 |
| 90 if (is_open ()) | |
| 91 return 0; | |
| 92 | |
| 93 if (pipe (pipe_fds) < 0) | |
| 94 return 0; | |
| 95 | |
| 3544 | 96 if (mode & std::ios::in) |
| 2094 | 97 { |
| 98 parent_end = pipe_fds[0]; | |
| 99 child_end = pipe_fds[1]; | |
| 100 } | |
| 101 else | |
| 102 { | |
| 103 parent_end = pipe_fds[1]; | |
| 104 child_end = pipe_fds[0]; | |
| 105 } | |
| 106 | |
| 3156 | 107 proc_pid = ::fork (); |
| 2094 | 108 |
| 109 if (proc_pid == 0) | |
| 110 { | |
| 10411 | 111 gnulib::close (parent_end); |
| 2094 | 112 |
| 113 if (child_end != child_std_end) | |
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114 { |
| 10411 | 115 gnulib::dup2 (child_end, child_std_end); |
| 116 gnulib::close (child_end); | |
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117 } |
| 2094 | 118 |
| 119 while (octave_procbuf_list) | |
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120 { |
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121 FILE *fp = octave_procbuf_list->f; |
| 3644 | 122 |
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123 if (fp) |
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124 { |
| 10411 | 125 gnulib::fclose (fp); |
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126 fp = 0; |
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127 } |
| 3644 | 128 |
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129 octave_procbuf_list = octave_procbuf_list->next; |
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130 } |
| 2094 | 131 |
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132 execl (SHELL_PATH, "sh", "-c", command, static_cast<void *> (0)); |
| 2094 | 133 |
| 134 exit (127); | |
| 135 } | |
| 136 | |
| 10411 | 137 gnulib::close (child_end); |
| 2094 | 138 |
| 139 if (proc_pid < 0) | |
| 140 { | |
| 10411 | 141 gnulib::close (parent_end); |
| 2094 | 142 return 0; |
| 143 } | |
| 144 | |
| 3632 | 145 f = ::fdopen (parent_end, (mode & std::ios::in) ? "r" : "w"); |
| 3631 | 146 |
| 3649 | 147 if (mode & std::ios::out) |
| 6094 | 148 ::setvbuf (f, 0, _IOLBF, BUFSIZ); |
| 3649 | 149 |
| 3631 | 150 open_p = true; |
| 2094 | 151 |
| 152 next = octave_procbuf_list; | |
| 153 octave_procbuf_list = this; | |
| 154 | |
| 155 return this; | |
| 156 | |
| 157 #else | |
| 158 | |
| 159 return 0; | |
| 160 | |
| 161 #endif | |
| 162 } | |
| 163 | |
| 3631 | 164 octave_procbuf * |
| 165 octave_procbuf::close (void) | |
| 2094 | 166 { |
| 6096 | 167 #if defined (__CYGWIN__) || defined (__MINGW32__) || defined (_MSC_VER) |
| 4472 | 168 |
| 169 if (f) | |
| 170 { | |
| 6726 | 171 wstatus = octave_pclose (f); |
| 4472 | 172 f = 0; |
| 173 } | |
| 174 | |
| 175 open_p = false; | |
| 176 | |
| 177 return this; | |
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178 |
| 4472 | 179 #elif defined (HAVE_SYS_WAIT_H) |
| 2094 | 180 |
| 3644 | 181 if (f) |
| 182 { | |
| 183 pid_t wait_pid; | |
| 2094 | 184 |
| 3644 | 185 int status = -1; |
| 186 | |
| 187 for (octave_procbuf **ptr = &octave_procbuf_list; | |
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188 *ptr != 0; |
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189 ptr = &(*ptr)->next) |
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190 { |
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191 if (*ptr == this) |
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192 { |
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193 *ptr = (*ptr)->next; |
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194 status = 0; |
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195 break; |
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196 } |
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197 } |
| 2094 | 198 |
| 10411 | 199 if (status == 0 && gnulib::fclose (f) == 0) |
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200 { |
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201 using namespace std; |
| 3531 | 202 |
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203 do |
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204 { |
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205 wait_pid = octave_syscalls::waitpid (proc_pid, &wstatus, 0); |
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206 } |
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207 while (wait_pid == -1 && errno == EINTR); |
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208 } |
| 3644 | 209 |
| 210 f = 0; | |
| 3631 | 211 } |
| 2094 | 212 |
| 3631 | 213 open_p = false; |
| 2094 | 214 |
| 3631 | 215 return this; |
| 2094 | 216 |
| 217 #else | |
| 218 | |
| 3631 | 219 return 0; |
| 2094 | 220 |
| 221 #endif | |
| 222 } |