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vim-patch:7.4.235

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Problem:    It is not easy to get the full path of a command.
Solution:   Add the exepath() function.

https://code.google.com/p/vim/source/detail?r=5ab2946f7ce560985830fbc3c453bb0f7a01f385
This commit is contained in:
Scott Prager
2014-09-17 00:58:30 -04:00
parent 899878d347
commit 9445eaa297
6 changed files with 47 additions and 14 deletions
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35
src/nvim/os/fs.c
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@@ -66,7 +66,10 @@ bool os_isdir(const char_u *name)
return true;
}
/// Check if the given path represents an executable file.
/// Checks if the given path represents an executable file.
///
/// @param[in] name The name of the executable.
/// @param[out] abspath Path of the executable, if found and not `NULL`.
///
/// @return `true` if `name` is executable and
/// - can be found in $PATH,
@@ -74,16 +77,24 @@ bool os_isdir(const char_u *name)
/// - is absolute.
///
/// @return `false` otherwise.
bool os_can_exe(const char_u *name)
bool os_can_exe(const char_u *name, char_u **abspath)
{
// If it's an absolute or relative path don't need to use $PATH.
if (path_is_absolute_path(name) ||
(name[0] == '.' && (name[1] == '/' ||
(name[1] == '.' && name[2] == '/')))) {
return is_executable(name);
if (is_executable(name)) {
if (abspath != NULL) {
*abspath = save_absolute_path(name);
}
return true;
}
return false;
}
return is_executable_in_path(name);
return is_executable_in_path(name, abspath);
}
// Return true if "name" is an executable file, false if not or it doesn't
@@ -103,10 +114,13 @@ static bool is_executable(const char_u *name)
return false;
}
/// Check if a file is inside the $PATH and is executable.
/// Checks if a file is inside the `$PATH` and is executable.
///
/// @return `true` if `name` is an executable inside $PATH.
static bool is_executable_in_path(const char_u *name)
/// @param[in] name The name of the executable.
/// @param[out] abspath Path of the executable, if found and not `NULL`.
///
/// @return `true` if `name` is an executable inside `$PATH`.
static bool is_executable_in_path(const char_u *name, char_u **abspath)
{
const char *path = getenv("PATH");
// PATH environment variable does not exist or is empty.
@@ -131,8 +145,13 @@ static bool is_executable_in_path(const char_u *name)
append_path((char *) buf, (const char *) name, (int)buf_len);
if (is_executable(buf)) {
// Found our executable. Free buf and return.
// Check if the caller asked for a copy of the path.
if (abspath != NULL) {
*abspath = save_absolute_path(buf);
}
free(buf);
return true;
}