lib: Add GCC visibility(hidden) pragmas to private header files.

[notmuch] / xutil.c

diff --git a/xutil.c b/xutil.c
new file mode 100644 (file)
index 0000000..5f98f3f
--- /dev/null
+++ b/xutil.c
@@ -0,0 +1,138 @@
+/* xutil.c - Various wrapper functions to abort on error.
+ *
+ * Copyright © 2009 Carl Worth
+ *
+ * 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/ .
+ *
+ * Author: Carl Worth <cworth@cworth.org>
+ */
+
+#include "notmuch-private.h"
+
+#include <stdio.h>
+
+void *
+xcalloc (size_t nmemb, size_t size)
+{
+    void *ret;
+
+    ret = calloc (nmemb, size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+void *
+xmalloc (size_t size)
+{
+    void *ret;
+
+    ret = malloc (size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+void *
+xrealloc (void *ptr, size_t size)
+{
+    void *ret;
+
+    ret = realloc (ptr, size);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+char *
+xstrdup (const char *s)
+{
+    char *ret;
+
+    ret = strdup (s);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+
+    return ret;
+}
+
+char *
+xstrndup (const char *s, size_t n)
+{
+    char *ret;
+
+    if (strlen (s) <= n)
+       n = strlen (s);
+
+    ret = malloc (n + 1);
+    if (ret == NULL) {
+       fprintf (stderr, "Out of memory.\n");
+       exit (1);
+    }
+    memcpy (ret, s, n);
+    ret[n] = '\0';
+
+    return ret;
+}
+
+void
+xregcomp (regex_t *preg, const char *regex, int cflags)
+{
+    int rerr;
+
+    rerr = regcomp (preg, regex, cflags);
+    if (rerr) {
+       size_t error_size = regerror (rerr, preg, NULL, 0);
+       char *error = xmalloc (error_size);
+
+       regerror (rerr, preg, error, error_size);
+       fprintf (stderr, "Internal error: compiling regex %s: %s\n",
+                regex, error);
+       exit (1);
+    }
+}
+
+int
+xregexec (const regex_t *preg, const char *string,
+         size_t nmatch, regmatch_t pmatch[], int eflags)
+{
+    unsigned int i;
+    int rerr;
+
+    rerr = regexec (preg, string, nmatch, pmatch, eflags);
+    if (rerr)
+       return rerr;
+
+    for (i = 0; i < nmatch; i++) {
+       if (pmatch[i].rm_so == -1) {
+           fprintf (stderr, "Internal error: matching regex against %s:"
+                    "Sub-match %d not found\n",
+                    string, i);
+           exit (1);
+       }
+    }
+
+    return 0;
+}