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731 lines
15 KiB
731 lines
15 KiB
//========================================================================
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//
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// gfile.cc
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//
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// Miscellaneous file and directory name manipulation.
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//
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// Copyright 1996-2003 Glyph & Cog, LLC
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//
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//========================================================================
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#include <aconf.h>
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#ifdef WIN32
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# include <time.h>
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#else
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# if defined(MACOS)
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# include <sys/stat.h>
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# elif !defined(ACORN)
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <fcntl.h>
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# endif
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# include <limits.h>
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# include <string.h>
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# if !defined(VMS) && !defined(ACORN) && !defined(MACOS)
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# include <pwd.h>
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# endif
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# if defined(VMS) && (__DECCXX_VER < 50200000)
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# include <unixlib.h>
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# endif
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#endif // WIN32
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#include "GString.h"
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#include "gfile.h"
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// Some systems don't define this, so just make it something reasonably
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// large.
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#ifndef PATH_MAX
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#define PATH_MAX 1024
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#endif
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//------------------------------------------------------------------------
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GString *getHomeDir() {
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#ifdef VMS
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//---------- VMS ----------
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return new GString("SYS$LOGIN:");
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#elif defined(__EMX__) || defined(WIN32)
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//---------- OS/2+EMX and Win32 ----------
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char *s;
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GString *ret;
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if ((s = getenv("HOME")))
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ret = new GString(s);
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else
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ret = new GString(".");
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return ret;
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#elif defined(ACORN)
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//---------- RISCOS ----------
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return new GString("@");
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#elif defined(MACOS)
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//---------- MacOS ----------
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return new GString(":");
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#else
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//---------- Unix ----------
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char *s;
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struct passwd *pw;
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GString *ret;
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if ((s = getenv("HOME"))) {
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ret = new GString(s);
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} else {
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if ((s = getenv("USER")))
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pw = getpwnam(s);
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else
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pw = getpwuid(getuid());
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if (pw)
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ret = new GString(pw->pw_dir);
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else
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ret = new GString(".");
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}
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return ret;
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#endif
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}
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GString *getCurrentDir() {
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char buf[PATH_MAX+1];
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#if defined(__EMX__)
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if (_getcwd2(buf, sizeof(buf)))
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#elif defined(WIN32)
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if (GetCurrentDirectory(sizeof(buf), buf))
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#elif defined(ACORN)
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if (strcpy(buf, "@"))
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#elif defined(MACOS)
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if (strcpy(buf, ":"))
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#else
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if (getcwd(buf, sizeof(buf)))
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#endif
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return new GString(buf);
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return new GString();
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}
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GString *appendToPath(GString *path, char *fileName) {
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#if defined(VMS)
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//---------- VMS ----------
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//~ this should handle everything necessary for file
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//~ requesters, but it's certainly not complete
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char *p0, *p1, *p2;
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char *q1;
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p0 = path->getCString();
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p1 = p0 + path->getLength() - 1;
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if (!strcmp(fileName, "-")) {
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if (*p1 == ']') {
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for (p2 = p1; p2 > p0 && *p2 != '.' && *p2 != '['; --p2) ;
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if (*p2 == '[')
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++p2;
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path->del(p2 - p0, p1 - p2);
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} else if (*p1 == ':') {
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path->append("[-]");
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} else {
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path->clear();
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path->append("[-]");
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}
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} else if ((q1 = strrchr(fileName, '.')) && !strncmp(q1, ".DIR;", 5)) {
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if (*p1 == ']') {
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path->insert(p1 - p0, '.');
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path->insert(p1 - p0 + 1, fileName, q1 - fileName);
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} else if (*p1 == ':') {
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path->append('[');
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path->append(']');
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path->append(fileName, q1 - fileName);
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} else {
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path->clear();
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path->append(fileName, q1 - fileName);
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}
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} else {
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if (*p1 != ']' && *p1 != ':')
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path->clear();
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path->append(fileName);
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}
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return path;
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#elif defined(WIN32)
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//---------- Win32 ----------
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GString *tmp;
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char buf[256];
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char *fp;
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tmp = new GString(path);
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tmp->append('/');
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tmp->append(fileName);
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GetFullPathName(tmp->getCString(), sizeof(buf), buf, &fp);
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delete tmp;
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path->clear();
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path->append(buf);
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return path;
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#elif defined(ACORN)
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//---------- RISCOS ----------
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char *p;
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int i;
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path->append(".");
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i = path->getLength();
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path->append(fileName);
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for (p = path->getCString() + i; *p; ++p) {
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if (*p == '/') {
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*p = '.';
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} else if (*p == '.') {
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*p = '/';
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}
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}
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return path;
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#elif defined(MACOS)
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//---------- MacOS ----------
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char *p;
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int i;
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path->append(":");
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i = path->getLength();
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path->append(fileName);
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for (p = path->getCString() + i; *p; ++p) {
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if (*p == '/') {
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*p = ':';
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} else if (*p == '.') {
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*p = ':';
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}
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}
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return path;
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#elif defined(__EMX__)
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//---------- OS/2+EMX ----------
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int i;
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// appending "." does nothing
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if (!strcmp(fileName, "."))
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return path;
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// appending ".." goes up one directory
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if (!strcmp(fileName, "..")) {
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for (i = path->getLength() - 2; i >= 0; --i) {
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if (path->getChar(i) == '/' || path->getChar(i) == '\\' ||
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path->getChar(i) == ':')
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break;
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}
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if (i <= 0) {
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if (path->getChar(0) == '/' || path->getChar(0) == '\\') {
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path->del(1, path->getLength() - 1);
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} else if (path->getLength() >= 2 && path->getChar(1) == ':') {
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path->del(2, path->getLength() - 2);
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} else {
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path->clear();
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path->append("..");
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}
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} else {
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if (path->getChar(i-1) == ':')
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++i;
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path->del(i, path->getLength() - i);
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}
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return path;
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}
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// otherwise, append "/" and new path component
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if (path->getLength() > 0 &&
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path->getChar(path->getLength() - 1) != '/' &&
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path->getChar(path->getLength() - 1) != '\\')
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path->append('/');
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path->append(fileName);
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return path;
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#else
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//---------- Unix ----------
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int i;
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// appending "." does nothing
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if (!strcmp(fileName, "."))
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return path;
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// appending ".." goes up one directory
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if (!strcmp(fileName, "..")) {
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for (i = path->getLength() - 2; i >= 0; --i) {
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if (path->getChar(i) == '/')
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break;
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}
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if (i <= 0) {
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if (path->getChar(0) == '/') {
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path->del(1, path->getLength() - 1);
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} else {
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path->clear();
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path->append("..");
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}
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} else {
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path->del(i, path->getLength() - i);
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}
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return path;
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}
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// otherwise, append "/" and new path component
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if (path->getLength() > 0 &&
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path->getChar(path->getLength() - 1) != '/')
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path->append('/');
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path->append(fileName);
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return path;
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#endif
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}
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GString *grabPath(char *fileName) {
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#ifdef VMS
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//---------- VMS ----------
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char *p;
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if ((p = strrchr(fileName, ']')))
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return new GString(fileName, p + 1 - fileName);
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if ((p = strrchr(fileName, ':')))
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return new GString(fileName, p + 1 - fileName);
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return new GString();
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#elif defined(__EMX__) || defined(WIN32)
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//---------- OS/2+EMX and Win32 ----------
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char *p;
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if ((p = strrchr(fileName, '/')))
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return new GString(fileName, p - fileName);
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if ((p = strrchr(fileName, '\\')))
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return new GString(fileName, p - fileName);
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if ((p = strrchr(fileName, ':')))
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return new GString(fileName, p + 1 - fileName);
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return new GString();
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#elif defined(ACORN)
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//---------- RISCOS ----------
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char *p;
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if ((p = strrchr(fileName, '.')))
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return new GString(fileName, p - fileName);
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return new GString();
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#elif defined(MACOS)
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//---------- MacOS ----------
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char *p;
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if ((p = strrchr(fileName, ':')))
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return new GString(fileName, p - fileName);
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return new GString();
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#else
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//---------- Unix ----------
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char *p;
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if ((p = strrchr(fileName, '/')))
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return new GString(fileName, p - fileName);
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return new GString();
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#endif
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}
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GBool isAbsolutePath(char *path) {
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#ifdef VMS
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//---------- VMS ----------
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return strchr(path, ':') ||
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(path[0] == '[' && path[1] != '.' && path[1] != '-');
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#elif defined(__EMX__) || defined(WIN32)
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//---------- OS/2+EMX and Win32 ----------
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return path[0] == '/' || path[0] == '\\' || path[1] == ':';
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#elif defined(ACORN)
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//---------- RISCOS ----------
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return path[0] == '$';
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#elif defined(MACOS)
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//---------- MacOS ----------
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return path[0] != ':';
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#else
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//---------- Unix ----------
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return path[0] == '/';
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#endif
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}
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GString *makePathAbsolute(GString *path) {
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#ifdef VMS
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//---------- VMS ----------
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char buf[PATH_MAX+1];
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if (!isAbsolutePath(path->getCString())) {
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if (getcwd(buf, sizeof(buf))) {
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path->insert(0, buf);
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}
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}
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return path;
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#elif defined(WIN32)
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//---------- Win32 ----------
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char buf[_MAX_PATH];
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char *fp;
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buf[0] = '\0';
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if (!GetFullPathName(path->getCString(), _MAX_PATH, buf, &fp)) {
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path->clear();
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return path;
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}
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path->clear();
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path->append(buf);
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return path;
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#elif defined(ACORN)
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//---------- RISCOS ----------
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path->insert(0, '@');
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return path;
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#elif defined(MACOS)
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//---------- MacOS ----------
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path->del(0, 1);
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return path;
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#else
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//---------- Unix and OS/2+EMX ----------
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struct passwd *pw;
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char buf[PATH_MAX+1];
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GString *s;
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char *p1, *p2;
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int n;
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if (path->getChar(0) == '~') {
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if (path->getChar(1) == '/' ||
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#ifdef __EMX__
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path->getChar(1) == '\\' ||
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#endif
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path->getLength() == 1) {
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path->del(0, 1);
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s = getHomeDir();
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path->insert(0, s);
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delete s;
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} else {
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p1 = path->getCString() + 1;
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#ifdef __EMX__
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for (p2 = p1; *p2 && *p2 != '/' && *p2 != '\\'; ++p2) ;
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#else
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for (p2 = p1; *p2 && *p2 != '/'; ++p2) ;
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#endif
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if ((n = p2 - p1) > PATH_MAX)
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n = PATH_MAX;
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strncpy(buf, p1, n);
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buf[n] = '\0';
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if ((pw = getpwnam(buf))) {
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path->del(0, p2 - p1 + 1);
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path->insert(0, pw->pw_dir);
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}
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}
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} else if (!isAbsolutePath(path->getCString())) {
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if (getcwd(buf, sizeof(buf))) {
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#ifndef __EMX__
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path->insert(0, '/');
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#endif
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path->insert(0, buf);
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}
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}
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return path;
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#endif
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}
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time_t getModTime(char *fileName) {
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#ifdef WIN32
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//~ should implement this, but it's (currently) only used in xpdf
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return 0;
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#else
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struct stat statBuf;
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if (stat(fileName, &statBuf)) {
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return 0;
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}
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return statBuf.st_mtime;
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#endif
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}
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GBool openTempFile(GString **name, FILE **f, char *mode, char *ext) {
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#if defined(WIN32)
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//---------- Win32 ----------
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char *tempDir;
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GString *s, *s2;
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char buf[32];
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FILE *f2;
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int t, i;
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// this has the standard race condition problem, but I haven't found
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// a better way to generate temp file names with extensions on
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// Windows
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if ((tempDir = getenv("TEMP"))) {
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s = new GString(tempDir);
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s->append('\\');
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} else {
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s = new GString();
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}
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s->append("x");
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t = (int)time(NULL);
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for (i = 0; i < 1000; ++i) {
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sprintf(buf, "%d", t + i);
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s2 = s->copy()->append(buf);
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if (ext) {
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s2->append(ext);
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}
|
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if (!(f2 = fopen(s2->getCString(), "r"))) {
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if (!(f2 = fopen(s2->getCString(), mode))) {
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delete s2;
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delete s;
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return gFalse;
|
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}
|
|
*name = s2;
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*f = f2;
|
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delete s;
|
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return gTrue;
|
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}
|
|
fclose(f2);
|
|
delete s2;
|
|
}
|
|
delete s;
|
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return gFalse;
|
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#elif defined(VMS) || defined(__EMX__) || defined(ACORN) || defined(MACOS)
|
|
//---------- non-Unix ----------
|
|
char *s;
|
|
|
|
// There is a security hole here: an attacker can create a symlink
|
|
// with this file name after the tmpnam call and before the fopen
|
|
// call. I will happily accept fixes to this function for non-Unix
|
|
// OSs.
|
|
if (!(s = tmpnam(NULL))) {
|
|
return gFalse;
|
|
}
|
|
*name = new GString(s);
|
|
if (ext) {
|
|
(*name)->append(ext);
|
|
}
|
|
if (!(*f = fopen((*name)->getCString(), mode))) {
|
|
delete (*name);
|
|
return gFalse;
|
|
}
|
|
return gTrue;
|
|
#else
|
|
//---------- Unix ----------
|
|
char *s;
|
|
int fd;
|
|
|
|
if (ext) {
|
|
#if HAVE_MKSTEMPS
|
|
if ((s = getenv("TMPDIR"))) {
|
|
*name = new GString(s);
|
|
} else {
|
|
*name = new GString("/tmp");
|
|
}
|
|
(*name)->append("/XXXXXX")->append(ext);
|
|
fd = mkstemps((*name)->getCString(), strlen(ext));
|
|
#else
|
|
if (!(s = tmpnam(NULL))) {
|
|
return gFalse;
|
|
}
|
|
*name = new GString(s);
|
|
(*name)->append(ext);
|
|
fd = open((*name)->getCString(), O_WRONLY | O_CREAT | O_EXCL, 0600);
|
|
#endif
|
|
} else {
|
|
#if HAVE_MKSTEMP
|
|
if ((s = getenv("TMPDIR"))) {
|
|
*name = new GString(s);
|
|
} else {
|
|
*name = new GString("/tmp");
|
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}
|
|
(*name)->append("/XXXXXX");
|
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fd = mkstemp((*name)->getCString());
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|
#else // HAVE_MKSTEMP
|
|
if (!(s = tmpnam(NULL))) {
|
|
return gFalse;
|
|
}
|
|
*name = new GString(s);
|
|
fd = open((*name)->getCString(), O_WRONLY | O_CREAT | O_EXCL, 0600);
|
|
#endif // HAVE_MKSTEMP
|
|
}
|
|
if (fd < 0 || !(*f = fdopen(fd, mode))) {
|
|
delete *name;
|
|
return gFalse;
|
|
}
|
|
return gTrue;
|
|
#endif
|
|
}
|
|
|
|
GBool executeCommand(char *cmd) {
|
|
#ifdef VMS
|
|
return system(cmd) ? gTrue : gFalse;
|
|
#else
|
|
return system(cmd) ? gFalse : gTrue;
|
|
#endif
|
|
}
|
|
|
|
char *getLine(char *buf, int size, FILE *f) {
|
|
int c, i;
|
|
|
|
i = 0;
|
|
while (i < size - 1) {
|
|
if ((c = fgetc(f)) == EOF) {
|
|
break;
|
|
}
|
|
buf[i++] = (char)c;
|
|
if (c == '\x0a') {
|
|
break;
|
|
}
|
|
if (c == '\x0d') {
|
|
c = fgetc(f);
|
|
if (c == '\x0a' && i < size - 1) {
|
|
buf[i++] = (char)c;
|
|
} else if (c != EOF) {
|
|
ungetc(c, f);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
buf[i] = '\0';
|
|
if (i == 0) {
|
|
return NULL;
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
//------------------------------------------------------------------------
|
|
// GDir and GDirEntry
|
|
//------------------------------------------------------------------------
|
|
|
|
GDirEntry::GDirEntry(char *dirPath, char *nameA, GBool doStat) {
|
|
#ifdef VMS
|
|
char *p;
|
|
#elif defined(WIN32)
|
|
int fa;
|
|
GString *s;
|
|
#elif defined(ACORN)
|
|
#else
|
|
struct stat st;
|
|
GString *s;
|
|
#endif
|
|
|
|
name = new GString(nameA);
|
|
dir = gFalse;
|
|
if (doStat) {
|
|
#ifdef VMS
|
|
if (!strcmp(nameA, "-") ||
|
|
((p = strrchr(nameA, '.')) && !strncmp(p, ".DIR;", 5)))
|
|
dir = gTrue;
|
|
#elif defined(ACORN)
|
|
#else
|
|
s = new GString(dirPath);
|
|
appendToPath(s, nameA);
|
|
#ifdef WIN32
|
|
fa = GetFileAttributes(s->getCString());
|
|
dir = (fa != 0xFFFFFFFF && (fa & FILE_ATTRIBUTE_DIRECTORY));
|
|
#else
|
|
if (stat(s->getCString(), &st) == 0)
|
|
dir = S_ISDIR(st.st_mode);
|
|
#endif
|
|
delete s;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
GDirEntry::~GDirEntry() {
|
|
delete name;
|
|
}
|
|
|
|
GDir::GDir(char *name, GBool doStatA) {
|
|
path = new GString(name);
|
|
doStat = doStatA;
|
|
#if defined(WIN32)
|
|
GString *tmp;
|
|
|
|
tmp = path->copy();
|
|
tmp->append("/*.*");
|
|
hnd = FindFirstFile(tmp->getCString(), &ffd);
|
|
delete tmp;
|
|
#elif defined(ACORN)
|
|
#elif defined(MACOS)
|
|
#else
|
|
dir = opendir(name);
|
|
#ifdef VMS
|
|
needParent = strchr(name, '[') != NULL;
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
GDir::~GDir() {
|
|
delete path;
|
|
#if defined(WIN32)
|
|
if (hnd) {
|
|
FindClose(hnd);
|
|
hnd = NULL;
|
|
}
|
|
#elif defined(ACORN)
|
|
#elif defined(MACOS)
|
|
#else
|
|
if (dir)
|
|
closedir(dir);
|
|
#endif
|
|
}
|
|
|
|
GDirEntry *GDir::getNextEntry() {
|
|
GDirEntry *e;
|
|
|
|
#if defined(WIN32)
|
|
if (hnd) {
|
|
e = new GDirEntry(path->getCString(), ffd.cFileName, doStat);
|
|
if (hnd && !FindNextFile(hnd, &ffd)) {
|
|
FindClose(hnd);
|
|
hnd = NULL;
|
|
}
|
|
} else {
|
|
e = NULL;
|
|
}
|
|
#elif defined(ACORN)
|
|
#elif defined(MACOS)
|
|
#elif defined(VMS)
|
|
struct dirent *ent;
|
|
e = NULL;
|
|
if (dir) {
|
|
if (needParent) {
|
|
e = new GDirEntry(path->getCString(), "-", doStat);
|
|
needParent = gFalse;
|
|
return e;
|
|
}
|
|
ent = readdir(dir);
|
|
if (ent) {
|
|
e = new GDirEntry(path->getCString(), ent->d_name, doStat);
|
|
}
|
|
}
|
|
#else
|
|
struct dirent *ent;
|
|
e = NULL;
|
|
if (dir) {
|
|
ent = (struct dirent *)readdir(dir);
|
|
if (ent && !strcmp(ent->d_name, ".")) {
|
|
ent = (struct dirent *)readdir(dir);
|
|
}
|
|
if (ent) {
|
|
e = new GDirEntry(path->getCString(), ent->d_name, doStat);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return e;
|
|
}
|
|
|
|
void GDir::rewind() {
|
|
#ifdef WIN32
|
|
GString *tmp;
|
|
|
|
if (hnd)
|
|
FindClose(hnd);
|
|
tmp = path->copy();
|
|
tmp->append("/*.*");
|
|
hnd = FindFirstFile(tmp->getCString(), &ffd);
|
|
delete tmp;
|
|
#elif defined(ACORN)
|
|
#elif defined(MACOS)
|
|
#else
|
|
if (dir)
|
|
rewinddir(dir);
|
|
#ifdef VMS
|
|
needParent = strchr(path->getCString(), '[') != NULL;
|
|
#endif
|
|
#endif
|
|
}
|
|
|