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Introduce a global level warn() function. 

Like the existing error() function the new warn() function can be
used to describe a situation that probably should not be occuring,
but which the user (and Git) can continue to work around without
running into too many problems.

An example situation is a bad commit SHA1 found in a reflog.
Attempting to read this record out of the reflog isn't really an
error as we have skipped over it in the past.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
maint
Shawn O. Pearce 2006-12-21 19:48:32 -05:00 committed by Junio C Hamano
parent 51dcaa9686
commit fa39b6b5b1
2 changed files with 21 additions and 0 deletions
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2
git-compat-util.h
View File

@ -71,10 +71,12 @@
extern void usage(const char *err) NORETURN; extern void usage(const char *err) NORETURN;
extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2))); extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void warn(const char *err, ...) __attribute__((format (printf, 1, 2)));


extern void set_usage_routine(void (*routine)(const char *err) NORETURN); extern void set_usage_routine(void (*routine)(const char *err) NORETURN);
extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
extern void set_error_routine(void (*routine)(const char *err, va_list params)); extern void set_error_routine(void (*routine)(const char *err, va_list params));
extern void set_warn_routine(void (*routine)(const char *warn, va_list params));


#ifdef NO_MMAP #ifdef NO_MMAP



19
usage.c
View File

@ -29,12 +29,17 @@ static void error_builtin(const char *err, va_list params)
report("error: ", err, params); report("error: ", err, params);
} }


static void warn_builtin(const char *warn, va_list params)
{
report("warning: ", warn, params);
}


/* If we are in a dlopen()ed .so write to a global variable would segfault /* If we are in a dlopen()ed .so write to a global variable would segfault
* (ugh), so keep things static. */ * (ugh), so keep things static. */
static void (*usage_routine)(const char *err) NORETURN = usage_builtin; static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin; static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
static void (*error_routine)(const char *err, va_list params) = error_builtin; static void (*error_routine)(const char *err, va_list params) = error_builtin;
static void (*warn_routine)(const char *err, va_list params) = warn_builtin;


void set_usage_routine(void (*routine)(const char *err) NORETURN) void set_usage_routine(void (*routine)(const char *err) NORETURN)
{ {
@ -51,6 +56,11 @@ void set_error_routine(void (*routine)(const char *err, va_list params))
error_routine = routine; error_routine = routine;
} }


void set_warn_routine(void (*routine)(const char *warn, va_list params))
{
warn_routine = routine;
}



void usage(const char *err) void usage(const char *err)
{ {
@ -75,3 +85,12 @@ int error(const char *err, ...)
va_end(params); va_end(params);
return -1; return -1;
} }

void warn(const char *warn, ...)
{
va_list params;

va_start(params, warn);
warn_routine(warn, params);
va_end(params);
}