summaryrefslogtreecommitdiffabout
path: root/gconf/gconf-lex.l
Side-by-side diff
Diffstat (limited to 'gconf/gconf-lex.l') (more/less context) (show whitespace changes)
-rw-r--r--gconf/gconf-lex.l476
1 files changed, 0 insertions, 476 deletions
diff --git a/gconf/gconf-lex.l b/gconf/gconf-lex.l
deleted file mode 100644
index 1379640..0000000
--- a/gconf/gconf-lex.l
+++ b/dev/null
@@ -1,476 +0,0 @@
-/* gconf - General purpose configuration parser. -*- c -*- */
-%{
-/* gconf - General purpose configuration parser.
- Copyright (C) 2007, 2008, 2009 Sergey Poznyakoff
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-#include <gconf.h>
-#include <gconf-gram.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <errno.h>
-
-#define obstack_chunk_alloc malloc
-#define obstack_chunk_free free
-#include <obstack.h>
-#include <xalloc.h>
-#include <wordsplit.h>
-
-#if ENABLE_NLS
-# include "gettext.h"
-# define _(msgid) gettext (msgid)
-#else
-# define _(msgid) msgid
-#endif
-
-static char *multiline_delimiter;
-static size_t multiline_delimiter_len;
-static int multiline_unescape; /* Unescape here-document contents */
-static int (*char_to_strip) (char); /* Strip matching characters of each
- here-document line */
-
-gconf_locus_t gconf_current_locus; /* Input file location */
-/* Line correction. Equals to the number of #line directives inserted into
- the input by the preprocessor instance. The external preprocessor, if
- any, counts these as input lines and therefore the line numbers in *its*
- #line directives are offset by the value of XLINES.
-
- Uff, running two preprocessors is confusing...
-*/
-static size_t xlines;
-static struct obstack stk;
-
-static void multiline_begin (char *);
-static void multiline_add (char *);
-static char *multiline_strip_tabs (char *text);
-static void line_add_unescape_last (char *text, size_t len);
-static int ident (void);
-static int isemptystr (int off);
-
-static void parse_line (char *text, gconf_locus_t *ploc, size_t *pxlines);
-static void parse_line_cpp (char *text, gconf_locus_t *ploc, size_t *pxlines);
-
-#undef YY_INPUT
-#define YY_INPUT(buf,result,max_size) \
- do \
- { \
- if (gconf_preprocessor) \
- result = fread (buf, 1, max_size, yyin); \
- else \
- result = gconf_preproc_fill_buffer(buf, max_size); \
- } \
- while (0)
-
-%}
-
-
-%x COMMENT ML STR
-
-WS [ \t\f][ \t\f]*
-ID [a-zA-Z_][a-zA-Z_0-9-]+
-P [1-9][0-9]*
-
-%%
- /* C-style comments */
-"/*" BEGIN (COMMENT);
-<COMMENT>[^*\n]* /* eat anything that's not a '*' */
-<COMMENT>"*"+[^*/\n]* /* eat up '*'s not followed by '/'s */
-<COMMENT>\n ++gconf_current_locus.line;
-<COMMENT>"*"+"/" BEGIN (INITIAL);
- /* Line directive */
-^[ \t]*#[ \t]*{P}[ \t]+\".*\".*\n { parse_line_cpp (yytext,
- &gconf_current_locus,
- &xlines); }
-^[ \t]*#[ \t]*line[ \t].*\n { parse_line (yytext, &gconf_current_locus,
- &xlines); }
- /* End-of-line comments */
-#.*\n { gconf_current_locus.line++; }
-#.* /* end-of-file comment */;
-"//".*\n { gconf_current_locus.line++; }
-"//".* /* end-of-file comment */;
- /* Identifiers */
-<INITIAL>{ID} return ident ();
- /* Strings */
-[a-zA-Z0-9_\.\*/:@-]+ { gconf_line_begin ();
- gconf_line_add (yytext, yyleng);
- yylval.string = gconf_line_finish ();
- return STRING; }
- /* Quoted strings */
-\"[^\\"\n]*\" { gconf_line_begin ();
- gconf_line_add (yytext + 1, yyleng - 2);
- yylval.string = gconf_line_finish ();
- return QSTRING; }
-\"[^\\"\n]*\\. |
-\"[^\\"\n]*\\\n { BEGIN (STR);
- gconf_line_begin ();
- line_add_unescape_last (yytext + 1, yyleng - 1); }
-<STR>[^\\"\n]*\\. |
-<STR>\"[^\\"\n]*\\\n { line_add_unescape_last (yytext, yyleng); }
-<STR>[^\\"\n]*\" { BEGIN(INITIAL);
- if (yyleng > 1)
- gconf_line_add (yytext, yyleng - 1);
- yylval.string = gconf_line_finish ();
- return QSTRING; }
- /* Multiline strings */
-"<<"(-" "?)?\\?{ID}[ \t]*#.*\n |
-"<<"(-" "?)?\\?{ID}[ \t]*"//".*\n |
-"<<"(-" "?)?\\?{ID}[ \t]*\n |
-"<<"(-" "?)?\"{ID}\"[ \t]*#.*\n |
-"<<"(-" "?)?\"{ID}\"[ \t]*"//".*\n |
-"<<"(-" "?)?\"{ID}\"[ \t]*\n {
- BEGIN (ML);
- multiline_begin (yytext+2);
- gconf_current_locus.line++; }
- /* Ignore m4 line statements */
-<ML>^"#line ".*\n { gconf_current_locus.line++; }
-<ML>.*\n { char *p = multiline_strip_tabs (yytext);
-
- if (!strncmp (p, multiline_delimiter, multiline_delimiter_len)
- && isemptystr (p + multiline_delimiter_len - yytext))
- {
- free (multiline_delimiter);
- multiline_delimiter = NULL;
- BEGIN (INITIAL);
- yylval.string = gconf_line_finish ();
- return MSTRING;
- }
- gconf_current_locus.line++;
- multiline_add (p); }
-{WS} ;
- /* Other tokens */
-\n { gconf_current_locus.line++; }
-[,;{}()] return yytext[0];
-. { if (isascii (yytext[0]) && isprint (yytext[0]))
- gconf_error (&gconf_current_locus, 0, _("stray character %c"), yytext[0]);
- else
- gconf_error (&gconf_current_locus, 0, _("stray character \\%03o"),
- (unsigned char) yytext[0]); }
-%%
-
-pid_t gconf_preproc_pid;
-
-int
-yywrap ()
-{
- if (yyin)
- gconf_preproc_extrn_shutdown (gconf_preproc_pid);
- else
- gconf_preproc_done ();
- gconf_current_locus.file = NULL;
- return 1;
-}
-
-int
-gconf_lex_begin (const char *name)
-{
- if (yy_flex_debug > 0)
- yy_flex_debug = 0;
- obstack_init (&stk);
- if (gconf_preprocessor)
- {
- int fd;
-
- fd = open (name, O_RDONLY);
- if (fd == -1)
- {
- gconf_error (NULL, errno, _("Cannot open `%s'"), name);
- return 1;
- }
- close (fd);
-
- yyin = gconf_preproc_extrn_start (name, &gconf_preproc_pid);
- if (!yyin)
- {
- gconf_error (NULL, errno,
- _("Unable to start external preprocessor `%s'"),
- gconf_preprocessor);
- return 1;
- }
- }
- else
- return gconf_preproc_init (name);
-
- return 0;
-}
-
-void
-gconf_lex_end ()
-{
-}
-
-static int
-isemptystr (int off)
-{
- for (; yytext[off] && isspace (yytext[off]); off++)
- ;
- if (yytext[off] == ';')
- {
- int i;
- for (i = off + 1; yytext[i]; i++)
- if (!isspace (yytext[i]))
- return 0;
- yyless (off);
- return 1;
- }
- return yytext[off] == 0;
-}
-
-char *
-multiline_strip_tabs (char *text)
-{
- if (char_to_strip)
- for (; *text && char_to_strip (*text); text++)
- ;
- return text;
-}
-
-static int
-unquote_char (int c)
-{
- static char quote_transtab[] = "\\\\a\ab\bf\fn\nr\rt\t";
-
- char *p;
-
- for (p = quote_transtab; *p; p += 2)
- {
- if (*p == c)
- return p[1];
- }
- return -1;
-}
-
-static void
-unescape_to_obstack (int c)
-{
- if (c != '\n')
- {
- int t = unquote_char (c);
- if (t != -1)
- obstack_1grow (&stk, t);
- else
- {
- gconf_warning(&gconf_current_locus, 0,
- _("unknown escape sequence '\\%c'"),
- c);
- obstack_1grow (&stk, c);
- }
- }
-}
-
-void
-gconf_line_add (const char *text, size_t len)
-{
- obstack_grow (&stk, text, len);
-}
-
-/* Same, but unescapes the last character from yytext */
-static void
-line_add_unescape_last (char *text, size_t len)
-{
- obstack_grow (&stk, text, len - 2);
- unescape_to_obstack (text[len - 1]);
-}
-
-static void
-multiline_add (char *s)
-{
- if (multiline_unescape)
- {
- for (; *s; s++)
- {
- if (*s == '\\')
- {
- unescape_to_obstack (s[1]);
- ++s;
- }
- else
- obstack_1grow (&stk, *s);
- }
- }
- else
- gconf_line_add (s, strlen (s));
-}
-
-void
-gconf_line_begin ()
-{
- /* FIXME: nothing so far. Maybe prepare stk by calling obstack_finish? */
-}
-
-static int
-is_tab (char c)
-{
- return c == '\t';
-}
-
-static int
-is_ws (char c)
-{
- return c == '\t' || c == ' ';
-}
-
-void
-multiline_begin (char *p)
-{
- if (*p == '-')
- {
- if (*++p == ' ')
- {
- char_to_strip = is_ws;
- p++;
- }
- else
- char_to_strip = is_tab;
- }
- else
- char_to_strip = NULL;
- if (*p == '\\')
- {
- p++;
- multiline_unescape = 0;
- }
- else if (*p == '"')
- {
- char *q;
-
- p++;
- multiline_unescape = 0;
- q = strchr (p, '"');
- multiline_delimiter_len = q - p;
- }
- else
- {
- multiline_delimiter_len = strcspn (p, " \t");
- multiline_unescape = 1;
- }
-
- /* Remove trailing newline */
- multiline_delimiter_len--;
- multiline_delimiter = xmalloc (multiline_delimiter_len + 1);
- memcpy (multiline_delimiter, p, multiline_delimiter_len);
- multiline_delimiter[multiline_delimiter_len] = 0;
- gconf_line_begin ();
-}
-
-char *
-gconf_line_finish ()
-{
- obstack_1grow (&stk, 0);
- return obstack_finish (&stk);
-}
-
-static int
-ident ()
-{
- char *p;
-
- for (p = yytext; *p && isspace (*p); p++)
- ;
- obstack_grow (&stk, p, strlen (p));
- obstack_1grow (&stk, 0);
- yylval.string = obstack_finish (&stk);
- return IDENT;
-}
-
-void
-gconf_lex_trace (int n)
-{
- yy_flex_debug = -n;
-}
-
-gconf_value_t *
-gconf_value_dup(gconf_value_t *input)
-{
- gconf_value_t *ptr = obstack_alloc (&stk, sizeof (*ptr));
- *ptr = *input;
- return ptr;
-}
-
-
-static int
-assign_locus (gconf_locus_t *ploc, char *name, char *line, size_t *pxlines)
-{
- char *p;
-
- if (name)
- {
- if (pxlines && (!ploc->file || strcmp(name, ploc->file)))
- *pxlines = 0;
- ploc->file = gconf_install_text (name);
- }
- ploc->line = strtoul (line, &p, 10) - (pxlines ? *pxlines : 0);
- return *p != 0;
-}
-
-static void
-parse_line (char *text, gconf_locus_t *ploc, size_t *pxlines)
-{
- int rc = 1;
- struct wordsplit ws;
-
- if (wordsplit (text, &ws, WRDSF_DEFFLAGS))
- gconf_error (ploc, 0, _("cannot parse #line line"));
- else
- {
- if (ws.ws_wordc == 2)
- rc = assign_locus (ploc, NULL, ws.ws_wordv[1], pxlines);
- else if (ws.ws_wordc == 3)
- rc = assign_locus (ploc, ws.ws_wordv[2], ws.ws_wordv[1], pxlines);
- else if (ws.ws_wordc == 4)
- {
- rc = assign_locus (ploc, ws.ws_wordv[2], ws.ws_wordv[1], 0);
- if (rc == 0)
- {
- char *p;
- unsigned long x = strtoul (ws.ws_wordv[3], &p, 10);
- rc = *p != 0;
- if (rc == 0)
- *pxlines = x;
- }
- }
- else
- gconf_error (ploc, 0, _("invalid #line statement"));
-
- if (rc)
- gconf_error (ploc, 0, _("malformed #line statement"));
- wordsplit_free (&ws);
- }
-}
-
-static void
-parse_line_cpp (char *text, gconf_locus_t *ploc, size_t *pxlines)
-{
- struct wordsplit ws;
-
- if (wordsplit (text, &ws, WRDSF_DEFFLAGS))
- {
- gconf_error (ploc, 0, _("cannot parse #line line"));
- return;
- }
- else if (ws.ws_wordc < 3)
- gconf_error (ploc, 0, _("invalid #line statement"));
- else
- {
- if (assign_locus (ploc, ws.ws_wordv[2], ws.ws_wordv[1], pxlines))
- gconf_error (ploc, 0, _("malformed #line statement"));
- }
- wordsplit_free (&ws);
-}
-

Return to:

Send suggestions and report system problems to the System administrator.