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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-11-18 13:42:08 +0100
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-11-18 16:23:48 +0100
commit585997f4677db3707eb99b1012dad036ddecc0d0 (patch)
treef05dd0aa4fcabe4fb2f131864e2c79aaa4159dc6 /lib
parent3843ff0f632ff6a790d49b4895d7fefc1cd385ca (diff)
Add Windows implementation for mkdir_p
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib')
-rw-r--r--lib/common/mkdir_p.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/lib/common/mkdir_p.c b/lib/common/mkdir_p.c
index 95187ba..a568567 100644
--- a/lib/common/mkdir_p.c
+++ b/lib/common/mkdir_p.c
@@ -11,6 +11,145 @@
#include <stdio.h>
#include <errno.h>
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/*
+ Supported paths:
+ - <letter>:\ <absolute path>
+ - \\<server>\<share>\ <absolute path>
+ - \\?\<letter>:\ <absolute path>
+ - \\?\UNC\<server>\<share>\ <absolute path>
+ - Relative path not starting with '\'
+ */
+
+static WCHAR *skip_unc_path(WCHAR *ptr)
+{
+ /* server */
+ if (*ptr == '\0' || *ptr == '\\')
+ return NULL;
+
+ while (*ptr != '\0' && *ptr != '\\')
+ ++ptr;
+
+ if (*(ptr++) != '\\')
+ return NULL;
+
+ /* share */
+ if (*ptr == '\0' || *ptr == '\\')
+ return NULL;
+
+ while (*ptr != '\0' && *ptr != '\\')
+ ++ptr;
+
+ return (*ptr == '\\') ? (ptr + 1) : ptr;
+}
+
+static WCHAR *skip_prefix(WCHAR *ptr)
+{
+ if (isalpha(ptr[0]) && ptr[1] == ':' && ptr[2] == '\\')
+ return ptr + 3;
+
+ if (ptr[0] == '\\' && ptr[1] == '\\') {
+ if (ptr[2] == '?') {
+ if (ptr[3] != '\\')
+ return NULL;
+
+ ptr += 4;
+
+ if ((ptr[0] == 'u' || ptr[0] == 'U') &&
+ (ptr[1] == 'n' || ptr[1] == 'N') &&
+ (ptr[2] == 'c' || ptr[2] == 'C') &&
+ ptr[3] == '\\') {
+ ptr += 4;
+
+ return skip_unc_path(ptr);
+ }
+
+ if (isalpha(ptr[0]) && ptr[1] == ':' && ptr[2] == '\\')
+ return ptr + 3;
+
+ return NULL;
+ }
+
+ return skip_unc_path(ptr);
+ }
+
+ if (ptr[0] == '\\')
+ return NULL;
+
+ return ptr;
+}
+
+int mkdir_p(const char *path)
+{
+ WCHAR *wpath, *ptr, *end;
+ DWORD length, error;
+ bool done;
+
+ length = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0) + 1;
+ wpath = alloc_array(sizeof(wpath[0]), length);
+
+ if (wpath == NULL) {
+ fprintf(stderr, "Converting UTF-8 path to UTF-16: %ld\n",
+ GetLastError());
+ return -1;
+ }
+
+ MultiByteToWideChar(CP_UTF8, 0, path, -1, wpath, length);
+ wpath[length - 1] = '\0';
+
+ for (ptr = wpath; *ptr != '\0'; ++ptr) {
+ if (*ptr == '/')
+ *ptr = '\\';
+ }
+
+ ptr = skip_prefix(wpath);
+ if (ptr == NULL) {
+ fprintf(stderr, "Illegal or unsupported path: %s\n", path);
+ goto fail;
+ }
+
+ while (*ptr != '\0') {
+ if (*ptr == '\\') {
+ ++ptr;
+ continue;
+ }
+
+ for (end = ptr; *end != '\0' && *end != '\\'; ++end)
+ ++end;
+
+ if (*end == '\\') {
+ done = false;
+ *end = '\0';
+ } else {
+ done = true;
+ }
+
+ if (!CreateDirectoryW(wpath, NULL)) {
+ error = GetLastError();
+
+ if (error != ERROR_ALREADY_EXISTS) {
+ fprintf(stderr, "Creating %s: %ld\n",
+ path, error);
+ goto fail;
+ }
+ }
+
+ if (!done) {
+ *end = '\\';
+ ptr = end + 1;
+ }
+ }
+
+ free(wpath);
+ return 0;
+fail:
+ free(wpath);
+ return -1;
+}
+#else
int mkdir_p(const char *path)
{
size_t i, len;
@@ -43,3 +182,4 @@ int mkdir_p(const char *path)
return 0;
}
+#endif