file: use size_t for position and pointer

The bufsz variable is used to store the size of the buf memory region
and pos is used to index a position in this memory. Use size_t for these
variables in the internal handling instaed of int to not break with big
files.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

file.c

@@ -38,11 +38,11 @@
 /*
  * Fetch a new line from the input stream and resize buffer if necessary
  */
-__private void uci_getln(struct uci_context *ctx, int offset)
+__private void uci_getln(struct uci_context *ctx, size_t offset)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 	char *p;
-	int ofs;
+	size_t ofs;
 
 	if (pctx->buf == NULL) {
 		pctx->buf = uci_malloc(ctx, LINEBUF);
@@ -112,7 +112,7 @@ static void skip_whitespace(struct uci_context *ctx)
 		pctx->pos += 1;
 }
 
-static inline void addc(struct uci_context *ctx, int *pos_dest, int *pos_src)
+static inline void addc(struct uci_context *ctx, size_t *pos_dest, size_t *pos_src)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 
@@ -124,7 +124,7 @@ static inline void addc(struct uci_context *ctx, int *pos_dest, int *pos_src)
 /*
  * parse a double quoted string argument from the command line
  */
-static void parse_double_quote(struct uci_context *ctx, int *target)
+static void parse_double_quote(struct uci_context *ctx, size_t *target)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 	char c;
@@ -159,7 +159,7 @@ static void parse_double_quote(struct uci_context *ctx, int *target)
 /*
  * parse a single quoted string argument from the command line
  */
-static void parse_single_quote(struct uci_context *ctx, int *target)
+static void parse_single_quote(struct uci_context *ctx, size_t *target)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 	char c;
@@ -188,7 +188,7 @@ static void parse_single_quote(struct uci_context *ctx, int *target)
 /*
  * parse a string from the command line and detect the quoting style
  */
-static void parse_str(struct uci_context *ctx, int *target)
+static void parse_str(struct uci_context *ctx, size_t *target)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 	bool next = true;
@@ -237,7 +237,7 @@ done:
 static int next_arg(struct uci_context *ctx, bool required, bool name, bool package)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
-	int val, ptr;
+	size_t val, ptr;
 
 	skip_whitespace(ctx);
 	val = ptr = pctx_pos(pctx);

libuci.c

@@ -148,7 +148,7 @@ uci_get_errorstr(struct uci_context *ctx, char **dest, const char *prefix)
 		err = UCI_ERR_UNKNOWN;
 
 	if (ctx && ctx->pctx && (err == UCI_ERR_PARSE)) {
-		snprintf(error_info, sizeof(error_info) - 1, " (%s) at line %d, byte %d",
+		snprintf(error_info, sizeof(error_info) - 1, " (%s) at line %d, byte %zu",
 			 (ctx->pctx->reason ? ctx->pctx->reason : "unknown"),
 			 ctx->pctx->line, ctx->pctx->byte);
 	}

uci_internal.h

@@ -23,7 +23,7 @@ struct uci_parse_context
 	/* error context */
 	const char *reason;
 	int line;
-	int byte;
+	size_t byte;
 
 	/* private: */
 	struct uci_package *package;
@@ -32,8 +32,8 @@ struct uci_parse_context
 	FILE *file;
 	const char *name;
 	char *buf;
-	int bufsz;
-	int pos;
+	size_t bufsz;
+	size_t pos;
 };
 #define pctx_pos(pctx)		((pctx)->pos)
 #define pctx_str(pctx, i)	(&(pctx)->buf[(i)])
@@ -54,7 +54,7 @@ __private struct uci_package *uci_alloc_package(struct uci_context *ctx, const c
 
 __private FILE *uci_open_stream(struct uci_context *ctx, const char *filename, const char *origfilename, int pos, bool write, bool create);
 __private void uci_close_stream(FILE *stream);
-__private void uci_getln(struct uci_context *ctx, int offset);
+__private void uci_getln(struct uci_context *ctx, size_t offset);
 
 __private void uci_parse_error(struct uci_context *ctx, char *reason);
 __private void uci_alloc_parse_context(struct uci_context *ctx);