15211: zsh/pcre module

2 files changed, 141 insertions, 0 deletions

diff --git a/Src/Modules/pcre.c b/Src/Modules/pcre.c
new file mode 100644
index 000000000..a4dbb24c9
--- /dev/null
+++ b/Src/Modules/pcre.c
@@ -0,0 +1,134 @@
+/*
+ * pcre.c - interface to the PCRE library
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 2001 Clint Adams
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Clint Adams or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Andrew Main and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Clint Adams and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Andrew Main and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+/**/
+#if defined(HAVE_PCRE_COMPILE) && defined(HAVE_PCRE_EXEC)
+
+#include "pcre.mdh"
+#include "pcre.pro"
+#include <pcre.h>
+
+static pcre *pcre_pattern;
+static pcre_extra *pcre_hints;
+
+/**/
+static int
+bin_pcre_compile(char *nam, char **args, char *ops, int func)
+{
+    int pcre_opts = 0, pcre_errptr;
+    const char *pcre_error;
+    
+    if(ops['a']) pcre_opts |= PCRE_ANCHORED;
+    if(ops['i']) pcre_opts |= PCRE_CASELESS;
+    if(ops['m']) pcre_opts |= PCRE_MULTILINE;
+    if(ops['x']) pcre_opts |= PCRE_EXTENDED;
+    
+    pcre_pattern = pcre_compile(*args, pcre_opts, &pcre_error, &pcre_errptr, NULL);
+    
+    if (pcre_pattern == NULL)
+    {
+	zwarnnam(nam, "error in regex: %s", pcre_error, 0);
+	return 1;
+    }
+    
+    return 0;
+}
+
+/**/
+#ifdef HAVE_PCRE_STUDY
+
+/**/
+static int
+bin_pcre_study(char *nam, char **args, char *ops, int func)
+{
+    const char *pcre_error;
+    
+    pcre_hints = pcre_study(pcre_pattern, 0, &pcre_error);
+    if (pcre_error != NULL)
+    {
+	zwarnnam(nam, "error while studying regex: %s", pcre_error, 0);
+	return 1;
+    }
+    
+    return 0;
+}
+
+/**/
+#endif /* HAVE_PCRE_STUDY */
+
+/**/
+static int
+bin_pcre_match(char *nam, char **args, char *ops, int func)
+{
+#define PCRE_OVEC_SIZE 50
+    
+    int ovec[PCRE_OVEC_SIZE];   /* throwing this away now, but will be useful someday */
+    
+    return !(pcre_exec(pcre_pattern, pcre_hints, *args, strlen(*args), 0, 0, ovec, PCRE_OVEC_SIZE) >= 0);
+}
+
+static struct builtin bintab[] = {
+    BUILTIN("pcre_compile", 0, bin_pcre_compile, 1, 1, 0, "aimx",  NULL),
+#ifdef HAVE_PCRE_STUDY
+    BUILTIN("pcre_study",   0, bin_pcre_study,   0, 0, 0, NULL,    NULL),
+#endif
+    BUILTIN("pcre_match",   0, bin_pcre_match,   1, 1, 0, NULL,    NULL)
+};
+
+/**/
+int
+setup_(Module m)
+{
+    return 0;
+}
+
+/**/
+int
+boot_(Module m)
+{
+    return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+}
+
+/**/
+int
+cleanup_(Module m)
+{
+    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+    return 0;
+}
+
+/**/
+int
+finish_(Module m)
+{
+    return 0;
+}
+
+/**/
+#endif /* HAVE_PCRE_COMPILE && HAVE_PCRE_EXEC */
diff --git a/Src/Modules/pcre.mdd b/Src/Modules/pcre.mdd
new file mode 100644
index 000000000..d6290dd1b
--- /dev/null
+++ b/Src/Modules/pcre.mdd
@@ -0,0 +1,7 @@
+name=zsh/pcre
+link=either
+load=no
+
+autobins="pcre_compile pcre_study pcre_match"
+
+objects="pcre.o"