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Implement exit_if_null using variadic macros, fix compilation

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This commit is contained in:
Michael Stapelberg 2009-02-15 22:52:33 +01:00
parent 57f631b7a7
commit 7216738778
3 changed files with 4 additions and 21 deletions
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3
include/util.h
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@ -15,9 +15,10 @@
#ifndef _UTIL_H
#define _UTIL_H
#define exit_if_null(pointer, ...) { if (pointer == NULL) die(__VA_ARGS__); }
int min(int a, int b);
int max(int a, int b);
void exit_if_null(void *pointer, char *fmt, ...);
void die(char *fmt, ...);
void *smalloc(size_t size);
char *sstrdup(const char *str);

3
src/font.c
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@ -42,10 +42,9 @@ i3Font *load_font(xcb_connection_t *connection, const char *pattern) {
info_cookie = xcb_list_fonts_with_info(connection, 1, strlen(pattern), pattern);
check_error(connection, font_cookie, "Could not open font");
check_error(connection, info_cookie, "Could not get font information");
/* Get information (height/name) for this font */
xcb_list_fonts_with_info_reply_t *reply = xcb_list_fonts_with_info_reply(connection, cookie, NULL);
xcb_list_fonts_with_info_reply_t *reply = xcb_list_fonts_with_info_reply(connection, info_cookie, NULL);
exit_if_null(reply, "Could not load font \"%s\"\n", pattern);
if (asprintf(&(new->name), "%.*s", xcb_list_fonts_with_info_name_length(reply),

19
src/util.c
View File

@ -21,6 +21,7 @@
#include "data.h"
#include "table.h"
#include "layout.h"
#include "util.h"
int min(int a, int b) {
return (a < b ? a : b);
@ -30,24 +31,6 @@ int max(int a, int b) {
return (a > b ? a : b);
}
/*
* Checks if pointer is NULL and exits the whole program, printing a message to stdout
* before with the given format (see printf())
*
*/
void exit_if_null(void *pointer, char *fmt, ...) {
va_list args;
if (pointer != NULL)
return;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
exit(EXIT_FAILURE);
}
/*
* Prints the message (see printf()) to stderr, then exits the program.
*