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@@ -1,10 +1,10 @@
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/*
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* libdpkg - Debian packaging suite library routines
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- * trigdeferred.l - parsing of triggers/Deferred
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+ * trigdeferred.c - parsing of triggers/Deferred
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*
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* Copyright © 2007 Canonical Ltd
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* written by Ian Jackson <ijackson@chiark.greenend.org.uk>
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- * Copyright © 2008-2014 Guillem Jover <guillem@debian.org>
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+ * Copyright © 2008-2016 Guillem Jover <guillem@debian.org>
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -20,78 +20,29 @@
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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-%option prefix="trigdef_yy"
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-/* Reset the name to the default value (instead of using "trigdeferred.c")
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- * so that automake (ylwrap) can find it. */
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-%option outfile="lex.yy.c"
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-%option noyywrap
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-%option batch
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-%option nodefault
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-%option perf-report
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-%option warn
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-%option noinput
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-%option nounput
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-
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-%x midline
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-
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-%top {
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#include <config.h>
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#include <compat.h>
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-}
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-%{
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#include <sys/stat.h>
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+#include <errno.h>
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#include <fcntl.h>
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+#include <limits.h>
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+#include <stdlib.h>
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#include <dpkg/i18n.h>
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#include <dpkg/dpkg.h>
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#include <dpkg/dpkg-db.h>
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+#include <dpkg/c-ctype.h>
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#include <dpkg/file.h>
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#include <dpkg/dir.h>
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#include <dpkg/trigdeferred.h>
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#include <dpkg/triglib.h>
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-#define YY_DECL int trigdef_parse(void)
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-
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static struct varbuf fn, newfn;
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static const struct trigdefmeths *trigdef;
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-%}
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-
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-%%
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-
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-[ \t\n] /* whitespace */
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-#.*\n /* comments */
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-[\x21-\x7e]+ {
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- trigdef->trig_begin(trigdef_yytext);
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- BEGIN(midline);
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- }
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-
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-<midline>[ \t] /* whitespace */
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-<midline>[-0-9a-z][-:+.0-9a-z]* {
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- if (trigdef_yytext[0] == '-' && trigdef_yytext[1])
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- ohshit(_("invalid package name '%.250s' in triggers deferred "
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- "file '%.250s'"), trigdef_yytext, fn.buf);
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- trigdef->package(trigdef_yytext);
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- }
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-<midline>\n|#.*\n {
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- trigdef->trig_end();
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- BEGIN(0);
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- }
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-<midline><<EOF>> {
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- ohshit(_("truncated triggers deferred file '%.250s'"), fn.buf);
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- }
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-
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-<*>. {
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- ohshit(_("syntax error in triggers deferred file '%.250s' at "
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- "character '%s'%s"),
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- fn.buf, yytext, YY_START == midline ? " midline": "");
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- }
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-
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-%%
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-
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/*---------- Deferred file handling ----------*/
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static char *triggersdir;
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@@ -188,9 +139,6 @@ trigdef_update_start(enum trigdef_update_flags uf)
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if (!old_deferred)
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return TDUS_NO_DEFERRED;
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- trigdef_yyrestart(old_deferred);
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- BEGIN(0);
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-
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return TDUS_OK;
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}
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@@ -210,6 +158,93 @@ trigdef_update_printf(const char *format, ...)
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va_end(ap);
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}
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+static void
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+trigdef_parse_error(int line_num, const char *line, const char *ptr)
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+{
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+ ohshit(_("syntax error in triggers deferred file '%.250s' at "
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+ "line %d character %zd '%s'"),
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+ fn.buf, line_num, ptr - line + 1, ptr);
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+}
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+
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+/* Trim leading space. */
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+static char *
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+trigdef_skip_whitespace(char *ptr)
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+{
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+ while (*ptr) {
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+ if (!c_iswhite(*ptr))
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+ break;
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+ ptr++;
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+ }
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+
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+ return ptr;
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+}
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+
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+int
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+trigdef_parse(void)
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+{
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+ char line[_POSIX2_LINE_MAX];
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+ char *ptr, *ptr_ini;
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+ int line_num = 0;
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+
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+ while (fgets_checked(line, sizeof(line), old_deferred, fn.buf) > 0) {
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+ line_num++;
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+
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+ ptr = trigdef_skip_whitespace(line);
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+
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+ /* Skip comments and empty lines. */
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+ if (*ptr == '\0' || *ptr == '#')
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+ continue;
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+
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+ /* Parse the trigger directive. */
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+ ptr_ini = ptr;
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+ while (*ptr) {
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+ if (*ptr < 0x21 || *ptr > 0x7e)
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+ break;
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+ ptr++;
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+ }
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+
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+ if (*ptr == '\0' || ptr_ini == ptr)
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+ trigdef_parse_error(line_num, line, ptr);
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+ *ptr++ = '\0';
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+
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+ /* Set the trigger directive. */
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+ trigdef->trig_begin(ptr_ini);
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+
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+ /* Parse the package names. */
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+ while (*ptr) {
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+ ptr = trigdef_skip_whitespace(ptr);
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+
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+ ptr_ini = ptr;
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+ if (*ptr == '\0' ||
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+ !(c_isdigit(*ptr) || c_islower(*ptr) || *ptr == '-'))
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+ trigdef_parse_error(line_num, line, ptr);
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+
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+ while (*++ptr) {
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+ if (!c_isdigit(*ptr) && !c_islower(*ptr) &&
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+ *ptr != '-' && *ptr != ':' &&
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+ *ptr != '+' && *ptr != '.')
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+ break;
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+ }
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+
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+ if (*ptr != '\0' && *ptr != '#' && !c_iswhite(*ptr))
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+ trigdef_parse_error(line_num, line, ptr);
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+ *ptr++ = '\0';
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+
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+ if (ptr_ini[0] == '-' && ptr_ini[1])
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+ ohshit(_("invalid package name '%.250s' in "
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+ "triggers deferred file '%.250s'"),
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+ ptr_ini, fn.buf);
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+
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+ /* Set the package name. */
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+ trigdef->package(ptr_ini);
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+ }
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+
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+ trigdef->trig_end();
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+ }
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+
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+ return 0;
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+}
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+
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void
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trigdef_process_done(void)
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{
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Guillem Jover