11be35a165
To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
117 lines
4 KiB
C
117 lines
4 KiB
C
// Copyright 2012 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "text.h"
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#include <assert.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "error.h"
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/// Calculates the length of a formatting string with its replacements.
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///
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/// \param format The formatting string.
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/// \param ap List of arguments to apply to the formatting string.
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///
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/// \return -1 if there is an error; or the final length otherwise.
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static int
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calculate_length(const char* format, va_list ap)
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{
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va_list ap2;
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char buffer[1];
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va_copy(ap2, ap);
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const int needed = vsnprintf(buffer, sizeof(buffer), format, ap);
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va_end(ap2);
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return needed;
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}
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/// Generates a string from a format string and its replacements.
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///
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/// \param [out] output Pointer to the dynamically-allocated string with the
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/// result of the operation. The caller must release this with free().
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/// \param format The formatting string.
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/// \param ... Arguments to apply to the formatting string.
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///
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/// \return OK if the string could be formatted; an error otherwise.
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kyua_error_t
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kyua_text_printf(char** output, const char* format, ...)
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{
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kyua_error_t error;
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va_list ap;
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va_start(ap, format);
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error = kyua_text_vprintf(output, format, ap);
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va_end(ap);
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return error;
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}
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/// Generates a string from a format string and its replacements.
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///
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/// \param [out] output Pointer to the dynamically-allocated string with the
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/// result of the operation. The caller must release this with free().
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/// \param format The formatting string.
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/// \param ap List of to apply to the formatting string.
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///
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/// \return OK if the string could be formatted; an error otherwise.
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kyua_error_t
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kyua_text_vprintf(char** output, const char* format, va_list ap)
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{
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va_list ap2;
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va_copy(ap2, ap);
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const int length = calculate_length(format, ap2);
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va_end(ap2);
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if (length < 0)
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return kyua_libc_error_new(errno, "Could not calculate length of "
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"string with format '%s'", format);
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char* buffer = (char*)malloc(length + 1);
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if (buffer == NULL)
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return kyua_oom_error_new();
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va_copy(ap2, ap);
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const int printed_length = vsnprintf(buffer, length + 1, format, ap2);
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va_end(ap2);
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assert(printed_length == length);
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if (printed_length < 0) {
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free(buffer);
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return kyua_libc_error_new(errno, "Could generate string with format "
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"'%s'", format);
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}
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*output = buffer;
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return kyua_error_ok();
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}
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