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Diffstat (limited to 'usage.c')
-rw-r--r--usage.c79
1 files changed, 55 insertions, 24 deletions
diff --git a/usage.c b/usage.c
index ed146453ca..1dad03fb5c 100644
--- a/usage.c
+++ b/usage.c
@@ -6,23 +6,22 @@
#include "git-compat-util.h"
#include "cache.h"
+static FILE *error_handle;
+static int tweaked_error_buffering;
+
void vreportf(const char *prefix, const char *err, va_list params)
{
- char msg[4096];
- vsnprintf(msg, sizeof(msg), err, params);
- fprintf(stderr, "%s%s\n", prefix, msg);
-}
+ FILE *fh = error_handle ? error_handle : stderr;
-void vwritef(int fd, const char *prefix, const char *err, va_list params)
-{
- char msg[4096];
- int len = vsnprintf(msg, sizeof(msg), err, params);
- if (len > sizeof(msg))
- len = sizeof(msg);
+ fflush(fh);
+ if (!tweaked_error_buffering) {
+ setvbuf(fh, NULL, _IOLBF, 0);
+ tweaked_error_buffering = 1;
+ }
- write_in_full(fd, prefix, strlen(prefix));
- write_in_full(fd, msg, len);
- write_in_full(fd, "\n", 1);
+ fputs(prefix, fh);
+ vfprintf(fh, err, params);
+ fputc('\n', fh);
}
static NORETURN void usage_builtin(const char *err, va_list params)
@@ -76,6 +75,12 @@ void set_die_is_recursing_routine(int (*routine)(void))
die_is_recursing = routine;
}
+void set_error_handle(FILE *fh)
+{
+ error_handle = fh;
+ tweaked_error_buffering = 0;
+}
+
void NORETURN usagef(const char *err, ...)
{
va_list params;
@@ -104,19 +109,11 @@ void NORETURN die(const char *err, ...)
va_end(params);
}
-void NORETURN die_errno(const char *fmt, ...)
+static const char *fmt_with_err(char *buf, int n, const char *fmt)
{
- va_list params;
- char fmt_with_err[1024];
char str_error[256], *err;
int i, j;
- if (die_is_recursing()) {
- fputs("fatal: recursion detected in die_errno handler\n",
- stderr);
- exit(128);
- }
-
err = strerror(errno);
for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
if ((str_error[j++] = err[i++]) != '%')
@@ -131,11 +128,35 @@ void NORETURN die_errno(const char *fmt, ...)
}
}
str_error[j] = 0;
- snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error);
+ snprintf(buf, n, "%s: %s", fmt, str_error);
+ return buf;
+}
+
+void NORETURN die_errno(const char *fmt, ...)
+{
+ char buf[1024];
+ va_list params;
+
+ if (die_is_recursing()) {
+ fputs("fatal: recursion detected in die_errno handler\n",
+ stderr);
+ exit(128);
+ }
+
+ va_start(params, fmt);
+ die_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
+ va_end(params);
+}
+
+int error_errno(const char *fmt, ...)
+{
+ char buf[1024];
+ va_list params;
va_start(params, fmt);
- die_routine(fmt_with_err, params);
+ error_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
va_end(params);
+ return -1;
}
#undef error
@@ -149,6 +170,16 @@ int error(const char *err, ...)
return -1;
}
+void warning_errno(const char *warn, ...)
+{
+ char buf[1024];
+ va_list params;
+
+ va_start(params, warn);
+ warn_routine(fmt_with_err(buf, sizeof(buf), warn), params);
+ va_end(params);
+}
+
void warning(const char *warn, ...)
{
va_list params;