97 lines
1.8 KiB
C
97 lines
1.8 KiB
C
/*
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* This software is licensed under the terms of the MIT License.
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* See COPYING for further information.
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* ---
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* Copyright (c) 2011-2019, Lukas Weber <laochailan@web.de>.
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* Copyright (c) 2012-2019, Andrei Alexeyev <akari@taisei-project.org>.
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*/
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#include "taisei.h"
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#include "io.h"
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#include "log.h"
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#include "vfs/public.h"
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#include "assert.h"
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#include "stringops.h"
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char* SDL_RWgets(SDL_RWops *rwops, char *buf, size_t bufsize) {
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char c, *ptr = buf, *end = buf + bufsize - 1;
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assert(end > ptr);
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while((c = SDL_ReadU8(rwops)) && ptr <= end) {
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if((*ptr++ = c) == '\n')
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break;
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}
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if(ptr == buf)
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return NULL;
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if(ptr > end) {
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*end = 0;
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log_warn("Line too long (%zu bytes max): %s", bufsize, buf);
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} else {
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*ptr = 0;
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}
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return buf;
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}
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char* SDL_RWgets_realloc(SDL_RWops *rwops, char **buf, size_t *bufsize) {
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char c, *ptr = *buf, *end = *buf + *bufsize - 1;
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assert(end >= ptr);
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while((c = SDL_ReadU8(rwops))) {
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*ptr++ = c;
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if(ptr > end) {
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ptrdiff_t ofs = ptr - *buf;
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*bufsize *= 2;
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*buf = realloc(*buf, *bufsize);
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end = *buf + *bufsize - 1;
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ptr = *buf + ofs;
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*end = 0;
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}
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if(c == '\n') {
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break;
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}
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}
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if(ptr == *buf)
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return NULL;
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assert(ptr <= end);
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*ptr = 0;
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return *buf;
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}
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size_t SDL_RWprintf(SDL_RWops *rwops, const char* fmt, ...) {
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va_list args;
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va_start(args, fmt);
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char *str = vstrfmt(fmt, args);
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va_end(args);
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size_t ret = SDL_RWwrite(rwops, str, 1, strlen(str));
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free(str);
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return ret;
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}
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void tsfprintf(FILE *out, const char *restrict fmt, ...) {
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va_list args;
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va_start(args, fmt);
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vfprintf(out, fmt, args);
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va_end(args);
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}
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char* try_path(const char *prefix, const char *name, const char *ext) {
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char *p = strjoin(prefix, name, ext, NULL);
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if(vfs_query(p).exists) {
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return p;
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}
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free(p);
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return NULL;
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}
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