Add edit screen prototypes and docs

[lackey] / src / util.c

diff --git a/src/util.c b/src/util.c
index 420dbd56dd99b7279bcd0f21639859d2981c30e4..0d64fc4b2bb70598a4ccb26bb275a64f49d6385d 100644 (file)
--- a/src/util.c
+++ b/src/util.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Andy Spencer <andy753421@gmail.com>
+ * Copyright (C) 2012-2013 Andy Spencer <andy753421@gmail.com>
  *
  * 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
@@ -15,6 +15,9 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define _XOPEN_SOURCE
+#define _XOPEN_SOURCE_EXTENDED
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -81,6 +84,22 @@ void strsub(char *str, char find, char repl)
                        *cur = repl;
 }
 
+char *strcopy(const char *str)
+{
+       if (str == NULL)
+               return NULL;
+       return strdup(str);
+}
+
+int match(const char *a, const char *b)
+{
+       if (a == b)
+               return 1;
+       if (!a || !b)
+               return 0;
+       return !strcmp(a, b);
+}
+
 /* Memory functions */
 void *alloc0(int size)
 {
@@ -90,6 +109,39 @@ void *alloc0(int size)
        return data;
 }
 
+/* File functions */
+char *read_file(const char *path, int *len)
+{
+       /* we could use stat, but we'll try to be portable */
+       FILE *fd = fopen(path, "rt+");
+       if (!fd)
+               return NULL;
+
+       int   block = 512; // read size
+       int   size  = 512; // buffer size
+       int   slen  = 0;   // string length
+       char *buf   = malloc(size);
+       if (!buf)
+               goto err;
+
+       while (!feof(fd)) {
+               if (slen + block + 1 > size) {
+                       size *= 2;
+                       buf   = realloc(buf, size);
+                       if (!buf)
+                               goto err;
+               }
+               slen += fread(&buf[slen], 1, block, fd);
+               buf[slen] = '\0';
+       }
+
+err:
+       if (len)
+               *len = slen;
+       fclose(fd);
+       return buf;
+}
+
 /* Debugging functions */
 void debug(char *fmt, ...)
 {