140 lines
2.9 KiB
C
140 lines
2.9 KiB
C
/*
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* librd - Rapid Development C library
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*
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* Copyright (c) 2012, Magnus Edenhill
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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 met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "rd.h"
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#include "rdfile.h"
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const char *rd_basename (const char *path) {
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const char *t = path;
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const char *t2 = t;
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while ((t = strchr(t, '/')))
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t2 = ++t;
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return t2;
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}
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const char *rd_pwd (void) {
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static __thread char path[PATH_MAX];
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if (!getcwd(path, sizeof(path)-1))
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return NULL;
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return path;
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}
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ssize_t rd_file_size (const char *path) {
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struct stat st;
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if (stat(path, &st) == -1)
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return (ssize_t)-1;
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return st.st_size;
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}
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ssize_t rd_file_size_fd (int fd) {
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struct stat st;
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if (fstat(fd, &st) == -1)
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return (ssize_t)-1;
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return st.st_size;
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}
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mode_t rd_file_mode (const char *path) {
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struct stat st;
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if (stat(path, &st) == -1)
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return 0;
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return st.st_mode;
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}
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char *rd_file_read (const char *path, int *lenp) {
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char *buf;
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int fd;
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ssize_t size;
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int r;
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if ((fd = open(path, O_RDONLY)) == -1)
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return NULL;
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if ((size = rd_file_size_fd(fd)) == -1) {
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close(fd);
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return NULL;
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}
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if (!(buf = malloc(size+1))) {
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close(fd);
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return NULL;
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}
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if ((r = read(fd, buf, size)) == -1) {
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close(fd);
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free(buf);
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return NULL;
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}
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buf[r] = '\0';
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if (lenp)
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*lenp = r;
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return buf;
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}
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int rd_file_write (const char *path, const char *buf, int len,
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int flags, mode_t mode) {
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int fd;
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int r;
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int of = 0;
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if ((fd = open(path, O_CREAT|O_WRONLY|flags, mode)) == -1)
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return -1;
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while (of < len) {
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if ((r = write(fd, buf+of, RD_MIN(16384, len - of))) == -1) {
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close(fd);
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return -1;
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}
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of += r;
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}
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close(fd);
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return 0;
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}
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