1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Windows scandir function for the Fast Light Tool Kit (FLTK).
*
* Copyright 1998-2023 by Bill Spitzak and others.
*
* This library is free software. Distribution and use rights are outlined in
* the file "COPYING" which should have been included with this file. If this
* file is missing or damaged, see the license at:
*
* https://www.fltk.org/COPYING.php
*
* Please see the following page on how to report bugs and issues:
*
* https://www.fltk.org/bugs.php
*/
#ifndef __CYGWIN__
/* Emulation of POSIX scandir() call with error messages */
#include <FL/platform_types.h>
#include <FL/fl_utf8.h>
#include "flstring.h"
#include <windows.h>
#include <stdlib.h>
/* Get error message string for last failed WIN32 operation
* in 'errmsg' (if non-NULL), string size limited to errmsg_sz.
*
* NOTE: Copied from: fluid/ExternalCodeEditor_WIN32.cxx
*
* TODO: Verify works in different languages, with utf8 strings.
* TODO: This should be made available globally to the FLTK internals, in case
* other parts of FLTK need OS error messages..
*/
static void get_ms_errmsg(char *errmsg, int errmsg_sz) {
DWORD lastErr = GetLastError();
DWORD flags = FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_FROM_SYSTEM;
DWORD langid = MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
LPWSTR mbuf = 0;
DWORD msize = 0;
/* Early exit if parent doesn't want an errmsg */
if (!errmsg || errmsg_sz <= 0 ) return;
/* Get error message from Windows */
msize = FormatMessageW(flags, 0, lastErr, langid, (LPWSTR)&mbuf, 0, NULL);
if ( msize == 0 ) {
fl_snprintf(errmsg, errmsg_sz, "Error #%lu", (unsigned long)lastErr);
} else {
char *src;
char *dst;
/* convert message to UTF-8 */
fl_utf8fromwc(errmsg, errmsg_sz, mbuf, msize);
/* Remove '\r's -- they screw up fl_alert()) */
src = dst = errmsg;
for ( ; 1; src++ ) {
if ( *src == '\0' ) { *dst = '\0'; break; }
if ( *src != '\r' ) { *dst++ = *src; }
}
LocalFree(mbuf); /* Free the buffer allocated by the system */
}
}
/*
* This could use some docs.
*
* Returns -1 on error, errmsg returns error string (if non-NULL)
*/
int fl_scandir(const char *dirname, struct dirent ***namelist,
int (*select)(struct dirent *),
int (*compar)(struct dirent **, struct dirent **),
char *errmsg, int errmsg_sz) {
int len;
char *findIn, *d, is_dir = 0;
WIN32_FIND_DATAW findw;
HANDLE h;
int nDir = 0, NDir = 0;
struct dirent **dir = 0, *selectDir;
unsigned long ret;
if (errmsg && errmsg_sz>0) errmsg[0] = '\0';
len = (int) strlen(dirname);
findIn = (char *)malloc((size_t)(len+10));
if (!findIn) {
/* win32 malloc() docs: "malloc sets errno to ENOMEM if allocation fails" */
if (errmsg) fl_snprintf(errmsg, errmsg_sz, "%s", strerror(errno));
return -1;
}
strcpy(findIn, dirname);
for (d = findIn; *d; d++) if (*d == '/') *d = '\\';
if (len == 0) { strcpy(findIn, ".\\*"); }
if ((len == 2) && (findIn[1] == ':') && isalpha(findIn[0])) { *d++ = '\\'; *d = 0; }
if ((len == 1) && (d[-1] == '.')) { strcpy(findIn, ".\\*"); is_dir = 1; }
if ((len > 0) && (d[-1] == '\\')) { *d++ = '*'; *d = 0; is_dir = 1; }
if ((len > 1) && (d[-1] == '.') && (d[-2] == '\\')) { d[-1] = '*'; is_dir = 1; }
{ /* Create a block to limit the scope while we find the initial "wide" filename */
unsigned short *wbuf = NULL;
unsigned wlen = fl_utf8toUtf16(findIn, (unsigned) strlen(findIn), NULL, 0); /* Pass NULL to query length */
wlen++; /* add a little extra for termination etc. */
wbuf = (unsigned short*)malloc(sizeof(unsigned short)*(wlen+2));
wlen = fl_utf8toUtf16(findIn, (unsigned) strlen(findIn), wbuf, wlen); /* actually convert the filename */
wbuf[wlen] = 0; /* NULL terminate the resultant string */
if (!is_dir) { /* this file may still be a directory that we need to list */
DWORD attr = GetFileAttributesW(wbuf);
if (attr != INVALID_FILE_ATTRIBUTES && (attr & FILE_ATTRIBUTE_DIRECTORY) ) {
wbuf[wlen] = '\\'; wbuf[wlen+1] = '*'; wbuf[wlen+2] = 0;
}
}
h = FindFirstFileW(wbuf, &findw); /* get a handle to the first filename in the search */
free(wbuf); /* release the "wide" buffer before the pointer goes out of scope */
}
if (h == INVALID_HANDLE_VALUE) {
free(findIn);
ret = GetLastError();
if (ret != ERROR_NO_MORE_FILES) {
nDir = -1;
get_ms_errmsg(errmsg, errmsg_sz); /* return OS error msg */
}
*namelist = dir;
return nDir;
}
do {
int l = (int) wcslen(findw.cFileName);
int dstlen = l * 5 + 1;
selectDir=(struct dirent*)malloc(sizeof(struct dirent)+dstlen);
l = fl_utf8fromwc(selectDir->d_name, dstlen, findw.cFileName, l);
selectDir->d_name[l] = 0;
if (findw.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
/* Append a trailing slash to directory names... */
strcat(selectDir->d_name, "/");
}
if (!select || (*select)(selectDir)) {
if (nDir==NDir) {
struct dirent **tempDir = (struct dirent **)calloc(sizeof(struct dirent*), (size_t)(NDir+33));
if (NDir) memcpy(tempDir, dir, sizeof(struct dirent*)*NDir);
if (dir) free(dir);
dir = tempDir;
NDir += 32;
}
dir[nDir] = selectDir;
nDir++;
dir[nDir] = 0;
} else {
free(selectDir);
}
} while (FindNextFileW(h, &findw));
ret = GetLastError();
if (ret != ERROR_NO_MORE_FILES) {
/* don't return an error code, because the dir list may still be valid
up to this point */
}
FindClose(h);
free (findIn);
if (compar) qsort(dir, (size_t)nDir, sizeof(*dir),
(int(*)(const void*, const void*))compar);
*namelist = dir;
return nDir;
}
#endif
|
