mirror of
https://github.com/python/cpython
synced 2024-09-05 08:17:45 +00:00
Issue #17903: Added path search changes to launcher.
This commit is contained in:
parent
30298b468b
commit
22c039bf50
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* Copyright (C) 2011-2012 Vinay Sajip.
|
||||
* Copyright (C) 2011-2013 Vinay Sajip.
|
||||
* Licensed to PSF under a contributor agreement.
|
||||
*
|
||||
* Based on the work of:
|
||||
|
@ -18,7 +18,7 @@
|
|||
|
||||
/* Build options. */
|
||||
#define SKIP_PREFIX
|
||||
/* #define SEARCH_PATH */
|
||||
#define SEARCH_PATH
|
||||
|
||||
/* Just for now - static definition */
|
||||
|
||||
|
@ -595,12 +595,17 @@ invoke_child(wchar_t * executable, wchar_t * suffix, wchar_t * cmdline)
|
|||
}
|
||||
}
|
||||
|
||||
static wchar_t * builtin_virtual_paths [] = {
|
||||
L"/usr/bin/env python",
|
||||
L"/usr/bin/python",
|
||||
L"/usr/local/bin/python",
|
||||
L"python",
|
||||
NULL
|
||||
typedef struct {
|
||||
wchar_t *shebang;
|
||||
BOOL search;
|
||||
} SHEBANG;
|
||||
|
||||
static SHEBANG builtin_virtual_paths [] = {
|
||||
{ L"/usr/bin/env python", TRUE },
|
||||
{ L"/usr/bin/python", FALSE },
|
||||
{ L"/usr/local/bin/python", FALSE },
|
||||
{ L"python", FALSE },
|
||||
{ NULL, FALSE },
|
||||
};
|
||||
|
||||
/* For now, a static array of commands. */
|
||||
|
@ -776,10 +781,10 @@ static void read_commands()
|
|||
|
||||
static BOOL
|
||||
parse_shebang(wchar_t * shebang_line, int nchars, wchar_t ** command,
|
||||
wchar_t ** suffix)
|
||||
wchar_t ** suffix, BOOL *search)
|
||||
{
|
||||
BOOL rc = FALSE;
|
||||
wchar_t ** vpp;
|
||||
SHEBANG * vpp;
|
||||
size_t plen;
|
||||
wchar_t * p;
|
||||
wchar_t zapped;
|
||||
|
@ -789,15 +794,17 @@ parse_shebang(wchar_t * shebang_line, int nchars, wchar_t ** command,
|
|||
|
||||
*command = NULL; /* failure return */
|
||||
*suffix = NULL;
|
||||
*search = FALSE;
|
||||
|
||||
if ((*shebang_line++ == L'#') && (*shebang_line++ == L'!')) {
|
||||
shebang_line = skip_whitespace(shebang_line);
|
||||
if (*shebang_line) {
|
||||
*command = shebang_line;
|
||||
for (vpp = builtin_virtual_paths; *vpp; ++vpp) {
|
||||
plen = wcslen(*vpp);
|
||||
if (wcsncmp(shebang_line, *vpp, plen) == 0) {
|
||||
for (vpp = builtin_virtual_paths; vpp->shebang; ++vpp) {
|
||||
plen = wcslen(vpp->shebang);
|
||||
if (wcsncmp(shebang_line, vpp->shebang, plen) == 0) {
|
||||
rc = TRUE;
|
||||
*search = vpp->search;
|
||||
/* We can do this because all builtin commands contain
|
||||
* "python".
|
||||
*/
|
||||
|
@ -805,7 +812,7 @@ parse_shebang(wchar_t * shebang_line, int nchars, wchar_t ** command,
|
|||
break;
|
||||
}
|
||||
}
|
||||
if (*vpp == NULL) {
|
||||
if (vpp->shebang == NULL) {
|
||||
/*
|
||||
* Not found in builtins - look in customised commands.
|
||||
*
|
||||
|
@ -1012,8 +1019,10 @@ maybe_handle_shebang(wchar_t ** argv, wchar_t * cmdline)
|
|||
int i, j, nchars = 0;
|
||||
int header_len;
|
||||
BOOL is_virt;
|
||||
BOOL search;
|
||||
wchar_t * command;
|
||||
wchar_t * suffix;
|
||||
COMMAND *cmd = NULL;
|
||||
INSTALLED_PYTHON * ip;
|
||||
|
||||
if (rc == 0) {
|
||||
|
@ -1125,7 +1134,7 @@ of bytes: %d\n", header_len);
|
|||
if (nchars > 0) {
|
||||
shebang_line[--nchars] = L'\0';
|
||||
is_virt = parse_shebang(shebang_line, nchars, &command,
|
||||
&suffix);
|
||||
&suffix, &search);
|
||||
if (command != NULL) {
|
||||
debug(L"parse_shebang: found command: %s\n", command);
|
||||
if (!is_virt) {
|
||||
|
@ -1141,6 +1150,23 @@ of bytes: %d\n", header_len);
|
|||
error(RC_BAD_VIRTUAL_PATH, L"Unknown virtual \
|
||||
path '%s'", command);
|
||||
command += 6; /* skip past "python" */
|
||||
if (search && ((*command == L'\0') || isspace(*command))) {
|
||||
/* Command is eligible for path search, and there
|
||||
* is no version specification.
|
||||
*/
|
||||
debug(L"searching PATH for python executable\n");
|
||||
cmd = find_on_path(L"python");
|
||||
debug(L"Python on path: %s\n", cmd ? cmd->value : L"<not found>");
|
||||
if (cmd) {
|
||||
debug(L"located python on PATH: %s\n", cmd->value);
|
||||
invoke_child(cmd->value, suffix, cmdline);
|
||||
/* Exit here, as we have found the command */
|
||||
return;
|
||||
}
|
||||
/* FALL THROUGH: No python found on PATH, so fall
|
||||
* back to locating the correct installed python.
|
||||
*/
|
||||
}
|
||||
if (*command && !validate_version(command))
|
||||
error(RC_BAD_VIRTUAL_PATH, L"Invalid version \
|
||||
specification: '%s'.\nIn the first line of the script, 'python' needs to be \
|
||||
|
|
Loading…
Reference in a new issue