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136 lines (98 loc) · 2.94 KB
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Copy pathchdir.c
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136 lines (98 loc) · 2.94 KB
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/* DreamShell ##version##
* chdir.c
* (c) 2004-2014 SWAT
*/
#include "ds.h"
/* read a pathname based on the current directory and turn it into an abs one, we
don't check for validity, or really do anything except handle ..'s and .'s */
int makeabspath_wd(char *buff, char *path, char *dir, size_t size) {
int numtxts;
int i;
char *txts[32]; /* max of 32...should be nuff */
char *rslash;
numtxts = 0;
/* check if path is already absolute */
if (path[0] == '/') {
strncpy(buff, path, size);
return 0;
}
/* split the path into tokens */
for (numtxts = 0; numtxts < 32;) {
if ((txts[numtxts] = strsep(&path, "/")) == NULL)
break;
if (*txts[numtxts] != '\0')
numtxts++;
}
/* start from the current directory */
strncpy(buff, dir, size);
for (i = 0; i < numtxts; i++) {
if (strcmp(txts[i], "..") == 0) {
if ((rslash = strrchr(buff, '/')) != NULL)
*rslash = '\0';
} else if (strcmp(txts[i], ".") == 0) {
/* do nothing */
} else {
if (buff[strlen(buff) - 1] != '/')
strncat(buff, "/", size - 1 - strlen(buff));
strncat(buff, txts[i], size - 1 - strlen(buff));
}
}
/* make sure it's not empty */
if (buff[0] == '\0') {
buff[0] = '/';
buff[1] = '\0';
}
return 0;
}
// Deprecated
int makeabspath(char *buff, char *path, size_t size) {
//return makeabspath_wd(buff, path, cwd, size);
realpath(path, buff);
return 1;
}
const char *relativeFilePath(const char *rel, const char *file) {
if(file[0] == '/') return file;
char *rslash, *dir, *ret;
char fn[MAX_FN_LEN];
char buff[MAX_FN_LEN];
if((rslash = strrchr(rel, '/')) != NULL) {
strncpy(buff, file, MAX_FN_LEN);
dir = substring(rel, 0, strlen(rel) - strlen(rslash));
makeabspath_wd(fn, buff, dir, MAX_FN_LEN);
fn[strlen(fn)] = '\0';
ret = strdup(fn);
//ds_printf("Directory: '%s' File: '%s' Out: '%s'", dir, rslash, ret, fn);
free(dir);
} else {
return file;
}
return ret;
}
int relativeFilePath_wb(char *buff, const char *rel, const char *file) {
if(file[0] == '/') {
strncpy(buff, file, MAX_FN_LEN);
return 1;
}
/*
char *rslash, *dir;
if((rslash = strrchr(rel, '/')) != NULL) {
dir = substring(rel, 0, strlen(rel) - strlen(rslash));
makeabspath_wd(buff, file, dir, MAX_FN_LEN);
ds_printf("Directory: '%s' File: '%s' Out: '%s'", dir, rel, buff);
*/
makeabspath_wd(buff, (char*)file, getFilePath(rel), MAX_FN_LEN);
//ds_printf("Directory: '%s' File: '%s' Out: '%s'", path, rel, buff);
return 1;
}
char *getFilePath(const char *file) {
char *rslash;
if((rslash = strrchr(file, '/')) != NULL) {
return substring(file, 0, strlen(file) - strlen(rslash));
}
return NULL;
}
/* change the current directory (dir is an absolute path for now) */
// Deprecated
int ds_chdir(char *dir) {
return fs_chdir(dir);
}