mirror of
https://github.com/transmission/transmission
synced 2025-01-04 05:56:02 +00:00
dadffa2c0f
This way all the qualifiers (`const`, `volatile`, `mutable`) are grouped together, e.g. `T const* const x` vs. `const T* const x`. Also helps reading types right-to-left, e.g. "constant pointer to constant T" vs. "constant pointer to T which is constant".
176 lines
3.3 KiB
C
176 lines
3.3 KiB
C
/*
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* This file Copyright (C) 2013-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <assert.h>
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#include "transmission.h"
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#include "error.h"
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#include "utils.h"
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tr_error* tr_error_new(int code, char const* message_format, ...)
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{
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tr_error* error;
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va_list args;
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assert(message_format != NULL);
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va_start(args, message_format);
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error = tr_error_new_valist(code, message_format, args);
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va_end(args);
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return error;
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}
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tr_error* tr_error_new_literal(int code, char const* message)
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{
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tr_error* error;
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assert(message != NULL);
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error = tr_new(tr_error, 1);
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error->code = code;
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error->message = tr_strdup(message);
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return error;
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}
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tr_error* tr_error_new_valist(int code, char const* message_format, va_list args)
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{
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tr_error* error;
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assert(message_format != NULL);
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error = tr_new(tr_error, 1);
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error->code = code;
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error->message = tr_strdup_vprintf(message_format, args);
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return error;
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}
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void tr_error_free(tr_error* error)
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{
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if (error == NULL)
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{
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return;
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}
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tr_free(error->message);
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tr_free(error);
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}
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void tr_error_set(tr_error** error, int code, char const* message_format, ...)
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{
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va_list args;
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if (error == NULL)
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{
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return;
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}
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assert(*error == NULL);
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assert(message_format != NULL);
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va_start(args, message_format);
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*error = tr_error_new_valist(code, message_format, args);
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va_end(args);
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}
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void tr_error_set_literal(tr_error** error, int code, char const* message)
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{
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if (error == NULL)
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{
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return;
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}
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assert(*error == NULL);
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assert(message != NULL);
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*error = tr_error_new_literal(code, message);
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}
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void tr_error_propagate(tr_error** new_error, tr_error** old_error)
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{
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assert(old_error != NULL);
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assert(*old_error != NULL);
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if (new_error != NULL)
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{
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assert(*new_error == NULL);
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*new_error = *old_error;
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*old_error = NULL;
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}
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else
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{
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tr_error_clear(old_error);
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}
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}
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void tr_error_clear(tr_error** error)
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{
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if (error == NULL)
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{
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return;
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}
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tr_error_free(*error);
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*error = NULL;
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}
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static void error_prefix_valist(tr_error** error, char const* prefix_format, va_list args)
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{
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char* prefix;
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char* new_message;
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assert(error != NULL);
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assert(*error != NULL);
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assert(prefix_format != NULL);
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prefix = tr_strdup_vprintf(prefix_format, args);
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new_message = tr_strdup_printf("%s%s", prefix, (*error)->message);
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tr_free((*error)->message);
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(*error)->message = new_message;
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tr_free(prefix);
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}
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void tr_error_prefix(tr_error** error, char const* prefix_format, ...)
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{
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va_list args;
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assert(prefix_format != NULL);
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if (error == NULL || *error == NULL)
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{
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return;
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}
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va_start(args, prefix_format);
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error_prefix_valist(error, prefix_format, args);
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va_end(args);
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}
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void tr_error_propagate_prefixed(tr_error** new_error, tr_error** old_error, char const* prefix_format, ...)
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{
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va_list args;
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assert(prefix_format != NULL);
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tr_error_propagate(new_error, old_error);
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if (new_error == NULL)
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{
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return;
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}
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va_start(args, prefix_format);
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error_prefix_valist(new_error, prefix_format, args);
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va_end(args);
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}
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