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//
// FLUID path helper functions for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2025 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
//
#ifndef FLD_PATH_H
#define FLD_PATH_H
#include <FL/filename.H>
#include <FL/fl_utf8.h>
#include <FL/platform.H>
#include <string.h>
// Path helper functions using static buffers.
// These are NOT thread-safe, but FLUID is single-threaded.
// Each function uses its own buffer to allow nesting calls.
// Get current working directory - returns pointer to static buffer
inline const char *fld_getcwd(void) {
static char buf[FL_PATH_MAX];
fl_getcwd(buf, FL_PATH_MAX);
return buf;
}
// Get absolute path - returns pointer to static buffer
inline const char *fld_filename_absolute(const char *from) {
static char buf[FL_PATH_MAX];
fl_filename_absolute(buf, FL_PATH_MAX, from);
return buf;
}
// Get absolute path with base directory - returns pointer to static buffer
inline const char *fld_filename_absolute2(const char *from, const char *cwd) {
static char buf[FL_PATH_MAX];
fl_filename_absolute(buf, FL_PATH_MAX, from, cwd);
return buf;
}
// Get relative path - returns pointer to static buffer
inline const char *fld_filename_relative(const char *from) {
static char buf[FL_PATH_MAX];
fl_filename_relative(buf, FL_PATH_MAX, from);
return buf;
}
// Get relative path with base directory - returns pointer to static buffer
inline const char *fld_filename_relative2(const char *from, const char *cwd) {
static char buf[FL_PATH_MAX];
fl_filename_relative(buf, FL_PATH_MAX, from, cwd);
return buf;
}
// Get path component (directory) - returns pointer to static buffer
// Note: fl_filename_name returns pointer to filename within the string,
// so we need to copy the path portion
inline const char *fld_filename_path(const char *filename) {
static char buf[FL_PATH_MAX];
if (!filename || !*filename) {
buf[0] = '\0';
return buf;
}
const char *name = fl_filename_name(filename);
if (name == filename) {
// no path component
buf[0] = '\0';
return buf;
}
size_t len = name - filename;
if (len >= FL_PATH_MAX) len = FL_PATH_MAX - 1;
memcpy(buf, filename, len);
buf[len] = '\0';
return buf;
}
// Set extension - returns pointer to static buffer
inline const char *fld_filename_setext(const char *filename, const char *ext) {
static char buf[FL_PATH_MAX];
if (!filename) {
buf[0] = '\0';
return buf;
}
strlcpy(buf, filename, FL_PATH_MAX);
fl_filename_setext(buf, FL_PATH_MAX, ext);
return buf;
}
// Get filename without extension - returns pointer to static buffer
inline const char *fld_filename_noext(const char *filename) {
return fld_filename_setext(filename, "");
}
// Ensure path ends with slash - returns pointer to static buffer
inline const char *fld_end_with_slash(const char *path) {
static char buf[FL_PATH_MAX];
if (!path || !*path) {
buf[0] = '\0';
return buf;
}
size_t len = strlen(path);
if (len >= FL_PATH_MAX - 1) len = FL_PATH_MAX - 2;
memcpy(buf, path, len);
if (buf[len - 1] != '/' && buf[len - 1] != '\\') {
buf[len] = '/';
buf[len + 1] = '\0';
} else {
buf[len] = '\0';
}
return buf;
}
// Concatenate path and filename - returns pointer to static buffer
inline const char *fld_path_concat(const char *path, const char *name) {
static char buf[FL_PATH_MAX];
if (!path || !*path) {
if (!name) {
buf[0] = '\0';
} else {
strlcpy(buf, name, FL_PATH_MAX);
}
return buf;
}
strlcpy(buf, path, FL_PATH_MAX);
size_t len = strlen(buf);
if (len > 0 && buf[len - 1] != '/' && buf[len - 1] != '\\') {
if (len < FL_PATH_MAX - 1) {
buf[len] = '/';
buf[len + 1] = '\0';
len++;
}
}
if (name && len < FL_PATH_MAX - 1) {
strlcat(buf, name, FL_PATH_MAX);
}
return buf;
}
#endif // FLD_PATH_H
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