mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-23 07:23:34 +08:00
515 lines
9.1 KiB
C++
515 lines
9.1 KiB
C++
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <wchar.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <libgen.h>
|
|
|
|
#include "fallback.h"
|
|
#include "util.h"
|
|
|
|
#include "common.h"
|
|
#include "env.h"
|
|
#include "wutil.h"
|
|
#include "path.h"
|
|
#include "expand.h"
|
|
|
|
/**
|
|
Unexpected error in path_get_path()
|
|
*/
|
|
#define MISSING_COMMAND_ERR_MSG _( L"Error while searching for command '%ls'" )
|
|
|
|
bool path_get_path_string(const wcstring &cmd_str, wcstring &output, const env_vars &vars)
|
|
{
|
|
const wchar_t * const cmd = cmd_str.c_str();
|
|
int err = ENOENT;
|
|
debug( 3, L"path_get_path_string( '%ls' )", cmd );
|
|
|
|
if(wcschr( cmd, L'/' ) != 0 )
|
|
{
|
|
if( waccess( cmd, X_OK )==0 )
|
|
{
|
|
struct stat buff;
|
|
if(wstat( cmd, &buff ))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (S_ISREG(buff.st_mode))
|
|
{
|
|
output = cmd_str;
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
errno = EACCES;
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//struct stat buff;
|
|
//wstat( cmd, &buff );
|
|
return false;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
const wchar_t *path = vars.get(L"PATH");
|
|
if( path == 0 )
|
|
{
|
|
if( contains( PREFIX L"/bin", L"/bin", L"/usr/bin" ) )
|
|
{
|
|
path = L"/bin" ARRAY_SEP_STR L"/usr/bin";
|
|
}
|
|
else
|
|
{
|
|
path = L"/bin" ARRAY_SEP_STR L"/usr/bin" ARRAY_SEP_STR PREFIX L"/bin";
|
|
}
|
|
}
|
|
|
|
wcstokenizer tokenizer(path, ARRAY_SEP_STR);
|
|
wcstring new_cmd;
|
|
while (tokenizer.next(new_cmd))
|
|
{
|
|
size_t path_len = new_cmd.size();
|
|
if (path_len == 0) continue;
|
|
|
|
append_path_component(new_cmd, cmd_str);
|
|
if( waccess( new_cmd.c_str(), X_OK )==0 )
|
|
{
|
|
struct stat buff;
|
|
if( wstat( new_cmd.c_str(), &buff )==-1 )
|
|
{
|
|
if( errno != EACCES )
|
|
{
|
|
wperror( L"stat" );
|
|
}
|
|
continue;
|
|
}
|
|
if( S_ISREG(buff.st_mode) )
|
|
{
|
|
output = new_cmd;
|
|
return true;
|
|
}
|
|
err = EACCES;
|
|
|
|
}
|
|
else
|
|
{
|
|
switch( errno )
|
|
{
|
|
case ENOENT:
|
|
case ENAMETOOLONG:
|
|
case EACCES:
|
|
case ENOTDIR:
|
|
break;
|
|
default:
|
|
{
|
|
debug( 1,
|
|
MISSING_COMMAND_ERR_MSG,
|
|
new_cmd.c_str() );
|
|
wperror( L"access" );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
errno = err;
|
|
return false;
|
|
|
|
}
|
|
|
|
wchar_t *path_get_path( const wchar_t *cmd )
|
|
{
|
|
int err = ENOENT;
|
|
|
|
CHECK( cmd, 0 );
|
|
|
|
debug( 3, L"path_get_path( '%ls' )", cmd );
|
|
|
|
if(wcschr( cmd, L'/' ) != 0 )
|
|
{
|
|
if( waccess( cmd, X_OK )==0 )
|
|
{
|
|
struct stat buff;
|
|
if(wstat( cmd, &buff ))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if( S_ISREG(buff.st_mode) )
|
|
return wcsdup( cmd );
|
|
else
|
|
{
|
|
errno = EACCES;
|
|
return 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
struct stat buff;
|
|
wstat( cmd, &buff );
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
env_var_t path = env_get_string(L"PATH");
|
|
if( path.missing() )
|
|
{
|
|
if( contains( PREFIX L"/bin", L"/bin", L"/usr/bin" ) )
|
|
{
|
|
path = L"/bin" ARRAY_SEP_STR L"/usr/bin";
|
|
}
|
|
else
|
|
{
|
|
path = L"/bin" ARRAY_SEP_STR L"/usr/bin" ARRAY_SEP_STR PREFIX L"/bin";
|
|
}
|
|
}
|
|
|
|
/*
|
|
Allocate string long enough to hold the whole command
|
|
*/
|
|
wchar_t *new_cmd = (wchar_t *)calloc(wcslen(cmd)+path.size()+2, sizeof(wchar_t) );
|
|
|
|
/*
|
|
We tokenize a copy of the path, since strtok modifies
|
|
its arguments
|
|
*/
|
|
wchar_t *path_cpy = wcsdup( path.c_str() );
|
|
const wchar_t *nxt_path = path.c_str();
|
|
wchar_t *state;
|
|
|
|
if( (new_cmd==0) || (path_cpy==0) )
|
|
{
|
|
DIE_MEM();
|
|
}
|
|
|
|
for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
|
|
nxt_path != 0;
|
|
nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
|
|
{
|
|
int path_len = wcslen( nxt_path );
|
|
wcscpy( new_cmd, nxt_path );
|
|
if( new_cmd[path_len-1] != L'/' )
|
|
{
|
|
new_cmd[path_len++]=L'/';
|
|
}
|
|
wcscpy( &new_cmd[path_len], cmd );
|
|
if( waccess( new_cmd, X_OK )==0 )
|
|
{
|
|
struct stat buff;
|
|
if( wstat( new_cmd, &buff )==-1 )
|
|
{
|
|
if( errno != EACCES )
|
|
{
|
|
wperror( L"stat" );
|
|
}
|
|
continue;
|
|
}
|
|
if( S_ISREG(buff.st_mode) )
|
|
{
|
|
free( path_cpy );
|
|
return new_cmd;
|
|
}
|
|
err = EACCES;
|
|
|
|
}
|
|
else
|
|
{
|
|
switch( errno )
|
|
{
|
|
case ENOENT:
|
|
case ENAMETOOLONG:
|
|
case EACCES:
|
|
case ENOTDIR:
|
|
break;
|
|
default:
|
|
{
|
|
debug( 1,
|
|
MISSING_COMMAND_ERR_MSG,
|
|
new_cmd );
|
|
wperror( L"access" );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
free( path_cpy );
|
|
|
|
}
|
|
|
|
errno = err;
|
|
return 0;
|
|
}
|
|
|
|
bool path_get_path_string(const wcstring &cmd, wcstring &output)
|
|
{
|
|
bool success = false;
|
|
wchar_t *tmp = path_get_path(cmd.c_str());
|
|
if (tmp) {
|
|
output = tmp;
|
|
free(tmp);
|
|
success = true;
|
|
}
|
|
return success;
|
|
}
|
|
|
|
|
|
bool path_get_cdpath_string(const wcstring &dir_str, wcstring &result, const env_vars &vars)
|
|
{
|
|
wchar_t *res = 0;
|
|
int err = ENOENT;
|
|
bool success = false;
|
|
|
|
const wchar_t *const dir = dir_str.c_str();
|
|
if( dir[0] == L'/'|| (wcsncmp( dir, L"./", 2 )==0) )
|
|
{
|
|
struct stat buf;
|
|
if( wstat( dir, &buf ) == 0 )
|
|
{
|
|
if( S_ISDIR(buf.st_mode) )
|
|
{
|
|
result = dir_str;
|
|
success = true;
|
|
}
|
|
else
|
|
{
|
|
err = ENOTDIR;
|
|
}
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
const wchar_t *path = L".";
|
|
|
|
wcstokenizer tokenizer(path, ARRAY_SEP_STR);
|
|
wcstring next_path;
|
|
while (tokenizer.next(next_path))
|
|
{
|
|
expand_tilde(next_path);
|
|
if (next_path.size() == 0) continue;
|
|
|
|
wcstring whole_path = next_path;
|
|
append_path_component(whole_path, dir);
|
|
|
|
struct stat buf;
|
|
if( wstat( whole_path.c_str(), &buf ) == 0 )
|
|
{
|
|
if( S_ISDIR(buf.st_mode) )
|
|
{
|
|
result = whole_path;
|
|
success = true;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
err = ENOTDIR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( lwstat( whole_path.c_str(), &buf ) == 0 )
|
|
{
|
|
err = EROTTEN;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
if( !success )
|
|
{
|
|
errno = err;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
wchar_t *path_allocate_cdpath( const wchar_t *dir )
|
|
{
|
|
wchar_t *res = 0;
|
|
int err = ENOENT;
|
|
if( !dir )
|
|
return 0;
|
|
|
|
|
|
if( dir[0] == L'/'|| (wcsncmp( dir, L"./", 2 )==0) )
|
|
{
|
|
struct stat buf;
|
|
if( wstat( dir, &buf ) == 0 )
|
|
{
|
|
if( S_ISDIR(buf.st_mode) )
|
|
{
|
|
res = wcsdup(dir);
|
|
}
|
|
else
|
|
{
|
|
err = ENOTDIR;
|
|
}
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
wchar_t *path_cpy;
|
|
const wchar_t *nxt_path;
|
|
wchar_t *state;
|
|
wchar_t *whole_path;
|
|
|
|
env_var_t path = L".";
|
|
|
|
nxt_path = path.c_str();
|
|
path_cpy = wcsdup( path.c_str() );
|
|
|
|
if( !path_cpy )
|
|
{
|
|
DIE_MEM();
|
|
}
|
|
|
|
for( nxt_path = wcstok( path_cpy, ARRAY_SEP_STR, &state );
|
|
nxt_path != 0;
|
|
nxt_path = wcstok( 0, ARRAY_SEP_STR, &state) )
|
|
{
|
|
wchar_t *expanded_path = expand_tilde_compat( wcsdup(nxt_path) );
|
|
|
|
// debug( 2, L"woot %ls\n", expanded_path );
|
|
|
|
int path_len = wcslen( expanded_path );
|
|
if( path_len == 0 )
|
|
{
|
|
free(expanded_path );
|
|
continue;
|
|
}
|
|
|
|
whole_path =
|
|
wcsdupcat( expanded_path,
|
|
( expanded_path[path_len-1] != L'/' )?L"/":L"",
|
|
dir );
|
|
|
|
free(expanded_path );
|
|
|
|
struct stat buf;
|
|
if( wstat( whole_path, &buf ) == 0 )
|
|
{
|
|
if( S_ISDIR(buf.st_mode) )
|
|
{
|
|
res = whole_path;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
err = ENOTDIR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if( lwstat( whole_path, &buf ) == 0 )
|
|
{
|
|
err = EROTTEN;
|
|
}
|
|
}
|
|
|
|
free( whole_path );
|
|
}
|
|
free( path_cpy );
|
|
}
|
|
|
|
if( !res )
|
|
{
|
|
errno = err;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
bool path_can_get_cdpath(const wcstring &in) {
|
|
wchar_t *tmp = path_allocate_cdpath(in.c_str());
|
|
bool result = (tmp != NULL);
|
|
free(tmp);
|
|
return result;
|
|
}
|
|
|
|
|
|
bool path_get_config(wcstring &path)
|
|
{
|
|
int done = 0;
|
|
wcstring res;
|
|
|
|
const env_var_t xdg_dir = env_get_string( L"XDG_CONFIG_HOME" );
|
|
if( ! xdg_dir.missing() )
|
|
{
|
|
res = xdg_dir + L"/fish";
|
|
if( !create_directory( res.c_str() ) )
|
|
{
|
|
done = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const env_var_t home = env_get_string( L"HOME" );
|
|
if( ! home.missing() )
|
|
{
|
|
res = home + L"/.config/fish";
|
|
if( !create_directory( res.c_str() ) )
|
|
{
|
|
done = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if( done )
|
|
{
|
|
path = res;
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
debug( 0, _(L"Unable to create a configuration directory for fish. Your personal settings will not be saved. Please set the $XDG_CONFIG_HOME variable to a directory where the current user has write access." ));
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
static void replace_all(wcstring &str, const wchar_t *needle, const wchar_t *replacement)
|
|
{
|
|
size_t needle_len = wcslen(needle);
|
|
size_t offset = 0;
|
|
while((offset = str.find(needle, offset)) != wcstring::npos)
|
|
{
|
|
str.replace(offset, needle_len, replacement);
|
|
offset += needle_len;
|
|
}
|
|
}
|
|
|
|
void path_make_canonical( wcstring &path )
|
|
{
|
|
|
|
/* Remove double slashes */
|
|
size_t size;
|
|
do {
|
|
size = path.size();
|
|
replace_all(path, L"//", L"/");
|
|
} while (path.size() != size);
|
|
|
|
/* Remove trailing slashes */
|
|
while (size--) {
|
|
if (path.at(size) != L'/')
|
|
break;
|
|
}
|
|
/* Now size is either -1 (if the entire string was slashes) or is the index of the last non-slash character. Either way this will set it to the correct size. */
|
|
path.resize(size+1);
|
|
}
|
|
|