178 lines
3.5 KiB
C
178 lines
3.5 KiB
C
/*
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*
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* Singe 2
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* Copyright (C) 2019 Scott Duensing <scott@kangaroopunch.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <stdlib.h>
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#include <dirent.h>
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#include <string.h>
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#include "util.h"
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FILE *utilTraceFile = NULL;
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char *utilCreateString(char *format, ...) {
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va_list args;
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char *string;
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va_start(args, format);
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string = utilCreateStringVArgs(format, args);
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va_end(args);
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return string;
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}
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__attribute__((__format__(__printf__, 1, 0)))
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char *utilCreateStringVArgs(char *format, va_list args) {
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va_list argsCopy;
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int size = 0;
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char *buffer = NULL;
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va_copy(argsCopy, args);
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size = vsnprintf(NULL, 0, format, argsCopy) + 1;
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va_end(argsCopy);
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buffer = calloc(1, (size_t)size);
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if (buffer) {
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vsnprintf(buffer, (size_t)size, format, args);
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}
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return buffer;
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}
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__attribute__((__format__(__printf__, 1, 0)))
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__attribute__((noreturn))
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void utilDie(char *fmt, ...) {
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va_list args;
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va_start(args, fmt);
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vfprintf(stderr, fmt, args);
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va_end(args);
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printf("\n");
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fflush(stderr);
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exit(1);
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}
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bool utilFileExists(char *filename) {
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FILE *file;
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if ((file = fopen(filename, "r+"))) {
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fclose(file);
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return true;
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}
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return false;
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}
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char *utilGetFileExtension(char *filename) {
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char *start = filename + strlen(filename);
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int x;
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// Scan through name and find the last '.'
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for (x=0; x<(int)strlen(filename); x++) {
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if (filename[x] == '.') {
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start = &filename[x + 1];
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}
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// Reset if we find a path separator
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if (filename[x] == utilGetPathSeparator()) {
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start = filename + strlen(filename);
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}
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}
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return start;
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}
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char *utilGetLastPathComponent(char *pathname) {
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char *start = pathname;
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int x;
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// Scan through name and find the last path separator
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for (x=0; x<(int)strlen(pathname); x++) {
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if (pathname[x] == utilGetPathSeparator()) {
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start = &pathname[x + 1];
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}
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}
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return start;
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}
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char utilGetPathSeparator(void) {
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#ifdef _WIN32
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return '\\';
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#else
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return '/';
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#endif
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}
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bool utilPathExists(char *pathname) {
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DIR *dir = opendir(pathname);
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if (dir) {
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closedir(dir);
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return true;
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}
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return false;
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}
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__attribute__((__format__(__printf__, 1, 0)))
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void utilSay(char *fmt, ...) {
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va_list args;
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va_start(args, fmt);
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vfprintf(stdout, fmt, args);
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va_end(args);
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printf("\n");
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fflush(stdout);
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}
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void utilTrace(char *fmt, ...) {
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va_list args;
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if (utilTraceFile) {
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va_start(args, fmt);
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utilTraceVArgs(fmt, args);
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va_end(args);
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}
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}
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void utilTraceEnd(void) {
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if (utilTraceFile) fclose(utilTraceFile);
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}
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void utilTraceStart(char *filename) {
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utilTraceFile = fopen(filename, "wt");
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if (!utilTraceFile) utilDie("Unable to create trace file: %s", filename);
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}
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__attribute__((__format__(__printf__, 1, 0)))
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void utilTraceVArgs(char *fmt, va_list args) {
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if (utilTraceFile) {
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vfprintf(utilTraceFile, fmt, args);
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fprintf(utilTraceFile, "\n");
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fflush(utilTraceFile);
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}
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}
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