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![Nguyễn Thái Ngọc Duy](/assets/img/avatar_default.png)
Similar to die_errno(), these functions will append strerror() automatically. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
191 lines
3.7 KiB
C
191 lines
3.7 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "git-compat-util.h"
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#include "cache.h"
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static FILE *error_handle;
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static int tweaked_error_buffering;
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void vreportf(const char *prefix, const char *err, va_list params)
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{
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FILE *fh = error_handle ? error_handle : stderr;
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fflush(fh);
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if (!tweaked_error_buffering) {
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setvbuf(fh, NULL, _IOLBF, 0);
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tweaked_error_buffering = 1;
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}
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fputs(prefix, fh);
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vfprintf(fh, err, params);
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fputc('\n', fh);
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}
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static NORETURN void usage_builtin(const char *err, va_list params)
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{
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vreportf("usage: ", err, params);
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exit(129);
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}
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static NORETURN void die_builtin(const char *err, va_list params)
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{
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vreportf("fatal: ", err, params);
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exit(128);
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}
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static void error_builtin(const char *err, va_list params)
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{
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vreportf("error: ", err, params);
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}
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static void warn_builtin(const char *warn, va_list params)
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{
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vreportf("warning: ", warn, params);
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}
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static int die_is_recursing_builtin(void)
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{
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static int dying;
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return dying++;
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}
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/* If we are in a dlopen()ed .so write to a global variable would segfault
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* (ugh), so keep things static. */
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static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin;
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static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin;
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static void (*error_routine)(const char *err, va_list params) = error_builtin;
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static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
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static int (*die_is_recursing)(void) = die_is_recursing_builtin;
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void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params))
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{
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die_routine = routine;
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}
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void set_error_routine(void (*routine)(const char *err, va_list params))
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{
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error_routine = routine;
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}
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void set_die_is_recursing_routine(int (*routine)(void))
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{
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die_is_recursing = routine;
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}
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void set_error_handle(FILE *fh)
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{
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error_handle = fh;
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tweaked_error_buffering = 0;
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}
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void NORETURN usagef(const char *err, ...)
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{
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va_list params;
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va_start(params, err);
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usage_routine(err, params);
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va_end(params);
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}
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void NORETURN usage(const char *err)
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{
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usagef("%s", err);
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}
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void NORETURN die(const char *err, ...)
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{
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va_list params;
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if (die_is_recursing()) {
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fputs("fatal: recursion detected in die handler\n", stderr);
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exit(128);
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}
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va_start(params, err);
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die_routine(err, params);
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va_end(params);
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}
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static const char *fmt_with_err(char *buf, int n, const char *fmt)
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{
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char str_error[256], *err;
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int i, j;
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err = strerror(errno);
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for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
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if ((str_error[j++] = err[i++]) != '%')
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continue;
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if (j < sizeof(str_error) - 1) {
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str_error[j++] = '%';
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} else {
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/* No room to double the '%', so we overwrite it with
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* '\0' below */
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j--;
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break;
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}
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}
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str_error[j] = 0;
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snprintf(buf, n, "%s: %s", fmt, str_error);
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return buf;
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}
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void NORETURN die_errno(const char *fmt, ...)
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{
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char buf[1024];
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va_list params;
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if (die_is_recursing()) {
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fputs("fatal: recursion detected in die_errno handler\n",
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stderr);
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exit(128);
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}
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va_start(params, fmt);
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die_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
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va_end(params);
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}
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int error_errno(const char *fmt, ...)
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{
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char buf[1024];
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va_list params;
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va_start(params, fmt);
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error_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
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va_end(params);
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return -1;
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}
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#undef error
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int error(const char *err, ...)
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{
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va_list params;
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va_start(params, err);
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error_routine(err, params);
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va_end(params);
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return -1;
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}
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void warning_errno(const char *warn, ...)
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{
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char buf[1024];
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va_list params;
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va_start(params, warn);
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warn_routine(fmt_with_err(buf, sizeof(buf), warn), params);
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va_end(params);
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}
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void warning(const char *warn, ...)
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{
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va_list params;
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va_start(params, warn);
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warn_routine(warn, params);
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va_end(params);
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}
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