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9797563552
fltk/src/Fl_File_Browser.cxx
Albrecht Schlosser 9797563552 Improve code formatting according to CMP. 
Add one pair of braces for clarity, move some other braces and
else statements around. There's more to that, but these were
minimal changes to improve readability for solving STR #3043.
There are no real code changes involved though.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10474 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2014-11-27 15:29:54 +00:00

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//
// "$Id$"
//
// Fl_File_Browser routines.
//
// Copyright 1999-2010 by Michael Sweet.
//
// 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:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
// Contents:
//
// Fl_File_Browser::full_height() - Return the height of the list.
// Fl_File_Browser::item_height() - Return the height of a list item.
// Fl_File_Browser::item_width() - Return the width of a list item.
// Fl_File_Browser::item_draw() - Draw a list item.
// Fl_File_Browser::Fl_File_Browser() - Create a Fl_File_Browser widget.
// Fl_File_Browser::load() - Load a directory into the browser.
// Fl_File_Browser::filter() - Set the filename filter.
//
//
// Include necessary header files...
//
#include <FL/Fl_File_Browser.H>
#include <FL/fl_draw.H>
#include <FL/filename.H>
#include <FL/Fl_Image.H> // icon
#include <stdio.h>
#include <stdlib.h>
#include "flstring.h"
#ifdef __CYGWIN__
# include <mntent.h>
#elif defined(WIN32)
# include <windows.h>
# include <direct.h>
// Apparently Borland C++ defines DIRECTORY in <direct.h>, which
// interfers with the Fl_File_Icon enumeration of the same name.
# ifdef DIRECTORY
# undef DIRECTORY
# endif // DIRECTORY
#endif // __CYGWIN__
#ifdef __EMX__
# define INCL_DOS
# define INCL_DOSMISC
# include <os2.h>
#endif // __EMX__
#if defined(__APPLE__)
# include <sys/param.h>
# include <sys/ucred.h>
# include <sys/mount.h>
#endif // __APPLE__
#if defined(_AIX)
extern "C" {
# include <sys/types.h>
# include <sys/vmount.h>
# include <sys/mntctl.h>
// Older AIX versions don't expose this prototype
int
mntctl(int, int, char *);
}
#endif // _AIX
#if defined(__NetBSD__)
extern "C" {
# include <sys/param.h> // For '__NetBSD_Version__' definition
# if defined(__NetBSD_Version__) && (__NetBSD_Version__ >= 300000000)
# include <sys/types.h>
# include <sys/statvfs.h>
# if defined(HAVE_PTHREAD) && defined(HAVE_PTHREAD_H)
# include <pthread.h>
# endif // HAVE_PTHREAD && HAVE_PTHREAD_H
# ifdef HAVE_PTHREAD
static pthread_mutex_t getvfsstat_mutex = PTHREAD_MUTEX_INITIALIZER;
# endif // HAVE_PTHREAD/
# endif // __NetBSD_Version__
}
#endif // __NetBSD__
//
// FL_BLINE definition from "Fl_Browser.cxx"...
//
#define SELECTED 1
#define NOTDISPLAYED 2
// TODO -- Warning: The definition of FL_BLINE here is a hack.
// Fl_File_Browser should not do this. PLEASE FIX.
// FL_BLINE should be private to Fl_Browser, and not re-defined here.
// For now, make sure this struct is precisely consistent with Fl_Browser.cxx.
//
struct FL_BLINE // data is in a linked list of these
{
FL_BLINE *prev; // Previous item in list
FL_BLINE *next; // Next item in list
void *data; // Pointer to data (function)
Fl_Image *icon; // Pointer to optional icon
short length; // sizeof(txt)-1, may be longer than string
char flags; // selected, displayed
char txt[1]; // start of allocated array
};
//
// 'Fl_File_Browser::full_height()' - Return the height of the list.
//
int // O - Height in pixels
Fl_File_Browser::full_height() const
{
int i, // Looping var
th; // Total height of list.
for (i = 0, th = 0; i < size(); i ++)
th += item_height(find_line(i));
return (th);
}
//
// 'Fl_File_Browser::item_height()' - Return the height of a list item.
//
int // O - Height in pixels
Fl_File_Browser::item_height(void *p) const // I - List item data
{
FL_BLINE *line; // Pointer to line
char *t; // Pointer into text
int height; // Width of line
int textheight; // Height of text
// Figure out the standard text height...
fl_font(textfont(), textsize());
textheight = fl_height();
// We always have at least 1 line...
height = textheight;
// Scan for newlines...
line = (FL_BLINE *)p;
if (line != NULL)
for (t = line->txt; *t != '\0'; t ++)
if (*t == '\n')
height += textheight;
// If we have enabled icons then add space for them...
if (Fl_File_Icon::first() != NULL && height < iconsize_)
height = iconsize_;
// Add space for the selection border..
height += 2;
// Return the height
return (height);
}
//
// 'Fl_File_Browser::item_width()' - Return the width of a list item.
//
int // O - Width in pixels
Fl_File_Browser::item_width(void *p) const // I - List item data
{
int i; // Looping var
FL_BLINE *line; // Pointer to line
char *t, // Pointer into text
*ptr, // Pointer into fragment
fragment[10240]; // Fragment of text
int width, // Width of line
tempwidth; // Width of fragment
int column; // Current column
const int *columns; // Columns
// Scan for newlines...
line = (FL_BLINE *)p;
columns = column_widths();
// Set the font and size...
if (line->txt[strlen(line->txt) - 1] == '/')
fl_font(textfont() | FL_BOLD, textsize());
else
fl_font(textfont(), textsize());
if (strchr(line->txt, '\n') == NULL &&
strchr(line->txt, column_char()) == NULL)
{
// Do a fast width calculation...
width = (int)fl_width(line->txt);
}
else
{
// More than 1 line or have columns; find the maximum width...
width = 0;
tempwidth = 0;
column = 0;
for (t = line->txt, ptr = fragment; *t != '\0'; t ++)
if (*t == '\n')
{
// Newline - nul terminate this fragment and get the width...
*ptr = '\0';
tempwidth += (int)fl_width(fragment);
// Update the max width as needed...
if (tempwidth > width)
width = tempwidth;
// Point back to the start of the fragment...
ptr = fragment;
tempwidth = 0;
column = 0;
}
else if (*t == column_char())
{
// Advance to the next column...
column ++;
if (columns)
{
for (i = 0, tempwidth = 0; i < column && columns[i]; i ++)
tempwidth += columns[i];
}
else
tempwidth = column * (int)(fl_height() * 0.6 * 8.0);
if (tempwidth > width)
width = tempwidth;
ptr = fragment;
}
else
*ptr++ = *t;
if (ptr > fragment)
{
// Nul terminate this fragment and get the width...
*ptr = '\0';
tempwidth += (int)fl_width(fragment);
// Update the max width as needed...
if (tempwidth > width)
width = tempwidth;
}
}
// If we have enabled icons then add space for them...
if (Fl_File_Icon::first() != NULL)
width += iconsize_ + 8;
// Add space for the selection border..
width += 2;
// Return the width
return (width);
}
//
// 'Fl_File_Browser::item_draw()' - Draw a list item.
//
void
Fl_File_Browser::item_draw(void *p, // I - List item data
int X, // I - Upper-lefthand X coordinate
int Y, // I - Upper-lefthand Y coordinate
int W, // I - Width of item
int) const // I - Height of item
{
int i; // Looping var
FL_BLINE *line; // Pointer to line
Fl_Color c; // Text color
char *t, // Pointer into text
*ptr, // Pointer into fragment
fragment[10240]; // Fragment of text
int width, // Width of line
height; // Height of line
int column; // Current column
const int *columns; // Columns
// Draw the list item text...
line = (FL_BLINE *)p;
if (line->txt[strlen(line->txt) - 1] == '/')
fl_font(textfont() | FL_BOLD, textsize());
else
fl_font(textfont(), textsize());
if (line->flags & SELECTED)
c = fl_contrast(textcolor(), selection_color());
else
c = textcolor();
if (Fl_File_Icon::first() == NULL)
{
// No icons, just draw the text...
X ++;
W -= 2;
}
else
{
// Draw the icon if it is set...
if (line->data)
((Fl_File_Icon *)line->data)->draw(X, Y, iconsize_, iconsize_,
(line->flags & SELECTED) ? FL_YELLOW :
FL_LIGHT2,
active_r());
// Draw the text offset to the right...
X += iconsize_ + 9;
W -= iconsize_ - 10;
// Center the text vertically...
height = fl_height();
for (t = line->txt; *t != '\0'; t ++)
if (*t == '\n')
height += fl_height();
if (height < iconsize_)
Y += (iconsize_ - height) / 2;
}
// Draw the text...
line = (FL_BLINE *)p;
columns = column_widths();
width = 0;
column = 0;
if (active_r())
fl_color(c);
else
fl_color(fl_inactive(c));
for (t = line->txt, ptr = fragment; *t != '\0'; t ++) {
if (*t == '\n') {
// Newline - nul terminate this fragment and draw it...
*ptr = '\0';
fl_draw(fragment, X + width, Y, W - width, fl_height(),
(Fl_Align)(FL_ALIGN_LEFT | FL_ALIGN_CLIP), 0, 0);
// Point back to the start of the fragment...
ptr = fragment;
width = 0;
Y += fl_height();
column = 0;
} else if (*t == column_char()) {
// Tab - nul terminate this fragment and draw it...
*ptr = '\0';
int cW = W - width; // Clip width...
if (columns) {
// Try clipping inside this column...
for (i = 0; i < column && columns[i]; i ++) { ; }
if (columns[i])
cW = columns[i];
}
fl_draw(fragment, X + width, Y, cW, fl_height(),
(Fl_Align)(FL_ALIGN_LEFT | FL_ALIGN_CLIP), 0, 0);
// Advance to the next column...
column ++;
if (columns) {
for (i = 0, width = 0; i < column && columns[i]; i ++)
width += columns[i];
}
else
width = column * (int)(fl_height() * 0.6 * 8.0);
ptr = fragment;
}
else
*ptr++ = *t;
}
if (ptr > fragment) {
// Nul terminate this fragment and draw it...
*ptr = '\0';
fl_draw(fragment, X + width, Y, W - width, fl_height(),
(Fl_Align)(FL_ALIGN_LEFT | FL_ALIGN_CLIP), 0, 0);
}
}
//
// 'Fl_File_Browser::Fl_File_Browser()' - Create a Fl_File_Browser widget.
//
Fl_File_Browser::Fl_File_Browser(int X, // I - Upper-lefthand X coordinate
int Y, // I - Upper-lefthand Y coordinate
int W, // I - Width in pixels
int H, // I - Height in pixels
const char *l) // I - Label text
: Fl_Browser(X, Y, W, H, l)
{
// Initialize the filter pattern, current directory, and icon size...
pattern_ = "*";
directory_ = "";
iconsize_ = (uchar)(3 * textsize() / 2);
filetype_ = FILES;
}
//
// 'Fl_File_Browser::load()' - Load a directory into the browser.
//
int // O - Number of files loaded
Fl_File_Browser::load(const char *directory,// I - Directory to load
Fl_File_Sort_F *sort) // I - Sort function to use
{
int i; // Looping var
int num_files; // Number of files in directory
int num_dirs; // Number of directories in list
char filename[4096]; // Current file
Fl_File_Icon *icon; // Icon to use
// printf("Fl_File_Browser::load(\"%s\")\n", directory);
clear();
directory_ = directory;
if (!directory)
return (0);
if (directory_[0] == '\0')
{
//
// No directory specified; for UNIX list all mount points. For DOS
// list all valid drive letters...
//
num_files = 0;
if ((icon = Fl_File_Icon::find("any", Fl_File_Icon::DEVICE)) == NULL)
icon = Fl_File_Icon::find("any", Fl_File_Icon::DIRECTORY);
#ifdef WIN32
# ifdef __CYGWIN__
//
// Cygwin provides an implementation of setmntent() to get the list
// of available drives...
//
FILE *m = setmntent("/-not-used-", "r");
struct mntent *p;
while ((p = getmntent (m)) != NULL) {
add(p->mnt_dir, icon);
num_files ++;
}
endmntent(m);
# else
//
// Normal WIN32 code uses drive bits...
//
DWORD drives; // Drive available bits
drives = GetLogicalDrives();
for (i = 'A'; i <= 'Z'; i ++, drives >>= 1)
if (drives & 1)
{
sprintf(filename, "%c:/", i);
if (i < 'C') // see also: GetDriveType and GetVolumeInformation in WIN32
add(filename, icon);
else
add(filename, icon);
num_files ++;
}
# endif // __CYGWIN__
#elif defined(__EMX__)
//
// OS/2 code uses drive bits...
//
ULONG curdrive; // Current drive
ULONG drives; // Drive available bits
int start = 3; // 'C' (MRS - dunno if this is correct!)
DosQueryCurrentDisk(&curdrive, &drives);
drives >>= start - 1;
for (i = 'A'; i <= 'Z'; i ++, drives >>= 1)
if (drives & 1)
{
sprintf(filename, "%c:/", i);
add(filename, icon);
num_files ++;
}
#elif defined(__APPLE__)
// MacOS X and Darwin use getfsstat() system call...
int numfs; // Number of file systems
struct statfs *fs; // Buffer for file system info
// We always have the root filesystem.
add("/", icon);
// Get the mounted filesystems...
numfs = getfsstat(NULL, 0, MNT_NOWAIT);
if (numfs > 0) {
// We have file systems, get them...
fs = new struct statfs[numfs];
getfsstat(fs, sizeof(struct statfs) * numfs, MNT_NOWAIT);
// Add filesystems to the list...
for (i = 0; i < numfs; i ++) {
// Ignore "/", "/dev", and "/.vol"...
if (fs[i].f_mntonname[1] && strcmp(fs[i].f_mntonname, "/dev") &&
strcmp(fs[i].f_mntonname, "/.vol")) {
snprintf(filename, sizeof(filename), "%s/", fs[i].f_mntonname);
add(filename, icon);
}
num_files ++;
}
// Free the memory used for the file system info array...
delete[] fs;
}
#elif defined(_AIX)
// AIX don't write the mounted filesystems to a file like '/etc/mnttab'.
// But reading the list of mounted filesystems from the kernel is possible:
// http://publib.boulder.ibm.com/infocenter/pseries/v5r3/topic/com.ibm.aix.basetechref/doc/basetrf1/mntctl.htm
int res = -1, len;
char *list = NULL, *name;
struct vmount *vp;
// We always have the root filesystem
add("/", icon);
// Get the required buffer size for the vmount structures
res = mntctl(MCTL_QUERY, sizeof(len), (char *) &len);
if (!res) {
// Allocate buffer ...
list = (char *) malloc((size_t) len);
if (NULL == list) {
res = -1;
} else {
// ... and read vmount structures from kernel
res = mntctl(MCTL_QUERY, len, list);
if (0 >= res) {
res = -1;
} else {
for (i = 0, vp = (struct vmount *) list; i < res; ++i) {
name = (char *) vp + vp->vmt_data[VMT_STUB].vmt_off;
strlcpy(filename, name, sizeof(filename));
// Skip the already added root filesystem
if (strcmp("/", filename) != 0) {
strlcat(filename, "/", sizeof(filename));
add(filename, icon);
}
vp = (struct vmount *) ((char *) vp + vp->vmt_length);
}
}
}
}
// Note: Executing 'free(NULL)' is allowed and simply do nothing
free((void *) list);
#elif defined(__NetBSD__) && defined(__NetBSD_Version__) \
&& (__NetBSD_Version__ >= 300000000)
// NetBSD don't write the mounted filesystems to a file like '/etc/mnttab'.
// Since NetBSD 3.0 the system call getvfsstat(2) has replaced getfsstat(2)
// that is used by getmntinfo(3):
// http://www.daemon-systems.org/man/getmntinfo.3.html
int res = -1;
struct statvfs *list;
// We always have the root filesystem
add("/", icon);
# ifdef HAVE_PTHREAD
// Lock mutex for thread safety
if (!pthread_mutex_lock(&getvfsstat_mutex)) {
# endif // HAVE_PTHREAD
// Get list of statvfs structures
res = getmntinfo(&list, ST_WAIT);
if(0 < res) {
for (i = 0; i < res; ++i) {
strlcpy(filename, list[i].f_mntonname, sizeof(filename));
// Skip the already added root filesystem
if (strcmp("/", filename) != 0) {
strlcat(filename, "/", sizeof(filename));
add(filename, icon);
}
}
} else {
res = -1;
}
# ifdef HAVE_PTHREAD
pthread_mutex_unlock(&getvfsstat_mutex);
}
# endif // HAVE_PTHREAD
#else
//
// UNIX code uses /etc/fstab or similar...
//
FILE *mtab; // /etc/mtab or /etc/mnttab file
char line[FL_PATH_MAX]; // Input line
//
// Open the file that contains a list of mounted filesystems...
//
mtab = fl_fopen("/etc/mnttab", "r"); // Fairly standard
if (mtab == NULL)
mtab = fl_fopen("/etc/mtab", "r"); // More standard
if (mtab == NULL)
mtab = fl_fopen("/etc/fstab", "r"); // Otherwise fallback to full list
if (mtab == NULL)
mtab = fl_fopen("/etc/vfstab", "r"); // Alternate full list file
if (mtab != NULL)
{
while (fgets(line, sizeof(line), mtab) != NULL)
{
if (line[0] == '#' || line[0] == '\n')
continue;
if (sscanf(line, "%*s%4095s", filename) != 1)
continue;
// Add a trailing slash (except for the root filesystem)
if (strcmp("/", filename) != 0) {
strlcat(filename, "/", sizeof(filename));
}
// printf("Fl_File_Browser::load() - adding \"%s\" to list...\n", filename);
add(filename, icon);
num_files ++;
}
fclose(mtab);
} else {
// Every Unix has a root filesystem '/'.
// This last stage fallback ensures that the user don't get an empty
// window after requesting filesystem list.
add("/", icon);
}
#endif // WIN32 || __EMX__ || __APPLE__ || _AIX || ...
}
else
{
dirent **files; // Files in in directory
//
// Build the file list...
//
#if (defined(WIN32) && !defined(__CYGWIN__)) || defined(__EMX__)
strlcpy(filename, directory_, sizeof(filename));
i = (int) (strlen(filename) - 1);
if (i == 2 && filename[1] == ':' &&
(filename[2] == '/' || filename[2] == '\\'))
filename[2] = '/';
else if (filename[i] != '/' && filename[i] != '\\')
strlcat(filename, "/", sizeof(filename));
num_files = fl_filename_list(filename, &files, sort);
#else
num_files = fl_filename_list(directory_, &files, sort);
#endif /* WIN32 || __EMX__ */
if (num_files <= 0)
return (0);
for (i = 0, num_dirs = 0; i < num_files; i ++) {
if (strcmp(files[i]->d_name, "./")) {
snprintf(filename, sizeof(filename), "%s/%s", directory_,
files[i]->d_name);
icon = Fl_File_Icon::find(filename);
if ((icon && icon->type() == Fl_File_Icon::DIRECTORY) ||
_fl_filename_isdir_quick(filename)) {
num_dirs ++;
insert(num_dirs, files[i]->d_name, icon);
} else if (filetype_ == FILES &&
fl_filename_match(files[i]->d_name, pattern_)) {
add(files[i]->d_name, icon);
}
}
free(files[i]);
}
free(files);
}
return (num_files);
}
//
// 'Fl_File_Browser::filter()' - Set the filename filter.
//
void
Fl_File_Browser::filter(const char *pattern) // I - Pattern string
{
// If pattern is NULL set the pattern to "*"...
if (pattern)
pattern_ = pattern;
else
pattern_ = "*";
}
//
// End of "$Id$".
//
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