Sligtly change sum function

- directly return the sum
- directly exit on error

1 files changed, 7 insertions, 10 deletions

diff --git a/src/main.c b/src/main.c
index 9b17d54..02b2973 100644
--- a/src/main.c
+++ b/src/main.c
@@ -118,11 +118,10 @@ static void sanitize_sql_str(char **str)
 	*str = new_str;
 }
 
-/* Compute something that identifies the content of FILE and write it to
-   OUT. Algorithm from http://www.cse.yorku.ca/~oz/hash.html via
-   https://stackoverflow.com/a/7666577/20138083.  Return 0 on success, -1 on
-   error. */
-static int sum(uint32_t *out, const char *file)
+/* Compute something that identifies the content of FILE. Algorithm by Dan
+   Bernstein from http://www.cse.yorku.ca/~oz/hash.html via
+   https://stackoverflow.com/a/7666577/20138083. */
+static uint32_t sum(const char *file)
 {
 	FILE *stream = fopen(file, "r");
 	uint8_t buf[4096];
@@ -130,7 +129,7 @@ static int sum(uint32_t *out, const char *file)
 	uint32_t sum = 5381;
 	if (!file) {
 		perror("fopen");
-		return -1;
+		exit(EXIT_FAILURE);
 	}
 	while ((buf_len = fread(&buf, 1, sizeof(buf), stream)) != 0) {
 		for (int i = 0; i < buf_len; i++) {
@@ -140,12 +139,10 @@ static int sum(uint32_t *out, const char *file)
 	}
 	if (ferror(stream)) {
 		perror("fread");
-		fclose(stream);
-		return -1;
+		exit(EXIT_FAILURE);
 	}
 	fclose(stream);
-	*out = sum;
-	return 0;
+	return sum;
 }
 
 static time_t time_from_str(const char *str)