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#include <string.h>
#include <stdio.h>
/* Ensures portable headers are included such as inline. */
#include "config.h"
#include "fileio.h"
#include "pstrutil.h"
char *fb_copy_path_n(const char *path, size_t len)
{
size_t n;
char *s;
n = strnlen(path, len);
if ((s = malloc(n + 1))) {
memcpy(s, path, n);
s[n] = '\0';
}
return s;
}
char *fb_copy_path(const char *path)
{
size_t n;
char *s;
n = strlen(path);
if ((s = malloc(n + 1))) {
memcpy(s, path, n);
s[n] = '\0';
}
return s;
}
size_t fb_chomp(const char *path, size_t len, const char *ext)
{
size_t ext_len = ext ? strlen(ext) : 0;
if (len > ext_len && 0 == strncmp(path + len - ext_len, ext, ext_len)) {
len -= ext_len;
}
return len;
}
char *fb_create_join_path_n(const char *prefix, size_t prefix_len,
const char *suffix, size_t suffix_len, const char *ext, int path_sep)
{
char *path;
size_t ext_len = ext ? strlen(ext) : 0;
size_t n;
if (!prefix ||
(suffix_len > 0 && (suffix[0] == '/' || suffix[0] == '\\')) ||
(suffix_len > 1 && suffix[1] == ':')) {
prefix_len = 0;
}
if (path_sep && (prefix_len == 0 ||
(prefix[prefix_len - 1] == '/' || prefix[prefix_len - 1] == '\\'))) {
path_sep = 0;
}
path = malloc(prefix_len + !!path_sep + suffix_len + ext_len + 1);
if (!path) {
return 0;
}
n = 0;
if (prefix_len > 0) {
memcpy(path, prefix, prefix_len);
n += prefix_len;
}
if (path_sep) {
path[n++] = '/';
}
memcpy(path + n, suffix, suffix_len);
n += suffix_len;
memcpy(path + n, ext, ext_len);
n += ext_len;
path[n] = '\0';
return path;
}
char *fb_create_join_path(const char *prefix, const char *suffix, const char *ext, int path_sep)
{
return fb_create_join_path_n(prefix, prefix ? strlen(prefix) : 0,
suffix, suffix ? strlen(suffix) : 0, ext, path_sep);
}
char *fb_create_path_ext_n(const char *path, size_t path_len, const char *ext)
{
return fb_create_join_path_n(0, 0, path, path_len, ext, 0);
}
char *fb_create_path_ext(const char *path, const char *ext)
{
return fb_create_join_path(0, path, ext, 0);
}
char *fb_create_make_path_n(const char *path, size_t len)
{
size_t i, j, n;
char *s;
if (len == 1 && (path[0] == ' ' || path[0] == '\\')) {
if (!(s = malloc(3))) {
return 0;
}
s[0] = '\\';
s[1] = path[0];
s[2] = '\0';
return s;
}
if (len <= 1) {
return fb_copy_path_n(path, len);
}
for (i = 0, n = len; i < len - 1; ++i) {
if (path[i] == '\\' && path[i + 1] == ' ') {
++n;
}
n += path[i] == ' ';
}
n += path[i] == ' ';
if (!(s = malloc(n + 1))) {
return 0;
}
for (i = 0, j = 0; i < len - 1; ++i, ++j) {
if (path[i] == '\\' && path[i + 1] == ' ') {
s[j++] = '\\';
}
if (path[i] == ' ') {
s[j++] = '\\';
}
s[j] = path[i];
}
if (path[i] == ' ') {
s[j++] = '\\';
}
s[j++] = path[i];
s[j] = 0;
return s;
}
char *fb_create_make_path(const char *path)
{
return fb_create_make_path_n(path, strlen(path));
}
size_t fb_find_basename(const char *path, size_t len)
{
char *p = (char *)path;
p += len;
while(p != path) {
--p;
if (*p == '/' || *p == '\\') {
++p;
break;
}
}
return (size_t)(p - path);
}
char *fb_create_basename(const char *path, size_t len, const char *ext)
{
size_t pos;
char *s;
pos = fb_find_basename(path, len);
path += pos;
len -= pos;
len = fb_chomp(path, len, ext);
if ((s = malloc(len + 1))) {
memcpy(s, path, len);
s[len] = '\0';
}
return s;
}
char *fb_read_file(const char *filename, size_t max_size, size_t *size_out)
{
FILE *fp;
long k;
size_t size, pos, n, _out;
char *buf;
size_out = size_out ? size_out : &_out;
fp = fopen(filename, "rb");
size = 0;
buf = 0;
if (!fp) {
goto fail;
}
fseek(fp, 0L, SEEK_END);
k = ftell(fp);
if (k < 0) goto fail;
size = (size_t)k;
*size_out = size;
if (max_size > 0 && size > max_size) {
goto fail;
}
rewind(fp);
buf = malloc(size ? size : 1);
if (!buf) {
goto fail;
}
pos = 0;
while ((n = fread(buf + pos, 1, size - pos, fp))) {
pos += n;
}
if (pos != size) {
goto fail;
}
fclose(fp);
*size_out = size;
return buf;
fail:
if (fp) {
fclose(fp);
}
if (buf) {
free(buf);
}
*size_out = size;
return 0;
}
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