initial commitHEADmaster

1 files changed, 88 insertions, 0 deletions

diff --git a/util.c b/util.c
new file mode 100644
index 0000000..3232168
--- /dev/null
+++ b/util.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include "util.h"
+#include "debug.h" /* Probably shouldn't have debug in utils */
+
+char *
+s_cpy(const char *str)
+{
+	if (str == NULL)
+		return NULL;
+
+	char *ret = malloc(strlen(str) + 1);
+	if (ret == NULL)
+		error("Not enough memory\n");
+
+	strcpy(ret, str);
+	return ret;
+}
+
+char *
+s_con(const char *str, ...)
+{
+	size_t len;
+	va_list args;
+	const char *ar;
+	char *ret, *p;
+
+	len = strlen(str) + 1;
+	va_start(args, str);
+	while (ar = va_arg(args, const char*))
+		len += strlen(ar);
+	va_end(args);
+
+	ret = malloc(len);
+	if (ret == NULL)
+		error("Not enough memory\n");
+	p = stpcpy(ret, str);
+
+	va_start(args, str);
+	while (ar = va_arg(args, const char*))
+		p = stpcpy(p, ar);
+	va_end(args);
+
+	return ret;
+}
+
+char *
+f_read(const char *path)
+{
+	FILE *f;
+	char *buf;
+	long bsize;
+	buf = NULL;
+	if ((f = fopen(path, "r")) == NULL)
+		goto fread_deffer;
+
+	if (fseek(f, 0L, SEEK_END))
+		goto fread_deffer;
+
+	if ((bsize = ftell(f)) == -1)
+		goto fread_deffer;
+
+	buf = calloc(sizeof(*buf), bsize + 1);
+
+	if (buf == NULL)
+		goto fread_deffer;
+
+	if (fseek(f, 0L, SEEK_SET))
+		goto fread_deffer;
+
+	bsize = (long) fread(buf, sizeof(*buf), bsize, f);
+	if (ferror(f) != 0)
+		goto fread_deffer;
+
+	buf[bsize] = '\0';
+	fclose(f);
+
+	return buf;
+fread_deffer:
+	if (f)
+		fclose(f);
+	if (buf)
+		free(buf);
+	return NULL;
+}