319 lines
8.7 KiB
C++
319 lines
8.7 KiB
C++
#include <new>
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#include "zip.hh"
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#include "tools.hh"
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///////////////////////// file system ///////////////////////
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#ifdef WIN32
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#include <shlobj.h>
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#else
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <dirent.h>
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#endif
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string homedir = "";
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struct packagedir
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{
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char *dir, *filter;
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size_t dirlen, filterlen;
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};
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vector<packagedir> packagedirs;
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char *makerelpath(const char *dir, const char *file, const char *prefix, const char *cmd)
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{
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static string tmp;
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if(prefix) copystring(tmp, prefix);
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else tmp[0] = '\0';
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if(file[0]=='<')
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{
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const char *end = strrchr(file, '>');
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if(end)
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{
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size_t len = strlen(tmp);
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copystring(&tmp[len], file, min(sizeof(tmp)-len, size_t(end+2-file)));
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file = end+1;
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}
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}
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if(cmd) concatstring(tmp, cmd);
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if(dir)
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{
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defformatstring(pname, "%s/%s", dir, file);
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concatstring(tmp, pname);
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}
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else concatstring(tmp, file);
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return tmp;
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}
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char *path(char *s)
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{
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for(char *curpart = s;;)
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{
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char *endpart = strchr(curpart, '&');
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if(endpart) *endpart = '\0';
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if(curpart[0]=='<')
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{
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char *file = strrchr(curpart, '>');
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if(!file) return s;
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curpart = file+1;
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}
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for(char *t = curpart; (t = strpbrk(t, "/\\")); *t++ = PATHDIV);
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for(char *prevdir = nullptr, *curdir = curpart;;)
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{
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prevdir = curdir[0]==PATHDIV ? curdir+1 : curdir;
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curdir = strchr(prevdir, PATHDIV);
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if(!curdir) break;
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if(prevdir+1==curdir && prevdir[0]=='.')
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{
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memmove(prevdir, curdir+1, strlen(curdir+1)+1);
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curdir = prevdir;
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}
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else if(curdir[1]=='.' && curdir[2]=='.' && curdir[3]==PATHDIV)
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{
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if(prevdir+2==curdir && prevdir[0]=='.' && prevdir[1]=='.') continue;
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memmove(prevdir, curdir+4, strlen(curdir+4)+1);
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if(prevdir-2 >= curpart && prevdir[-1]==PATHDIV)
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{
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prevdir -= 2;
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while(prevdir-1 >= curpart && prevdir[-1] != PATHDIV) --prevdir;
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}
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curdir = prevdir;
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}
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}
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if(endpart)
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{
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*endpart = '&';
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curpart = endpart+1;
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}
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else break;
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}
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return s;
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}
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char *path(const char *s, bool copy)
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{
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static string tmp;
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copystring(tmp, s);
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path(tmp);
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return tmp;
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}
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const char *parentdir(const char *directory)
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{
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const char *p = directory + strlen(directory);
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while(p > directory && *p != '/' && *p != '\\') p--;
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static string parent;
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size_t len = p-directory+1;
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copystring(parent, directory, len);
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return parent;
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}
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bool fileexists(const char *path, const char *mode)
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{
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bool exists = true;
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if(mode[0]=='w' || mode[0]=='a') path = parentdir(path);
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#ifdef WIN32
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if(GetFileAttributes(path[0] ? path : ".\\") == INVALID_FILE_ATTRIBUTES) exists = false;
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#else
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if(access(path[0] ? path : ".", mode[0]=='w' || mode[0]=='a' ? W_OK : (mode[0]=='d' ? X_OK : R_OK)) == -1) exists = false;
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#endif
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return exists;
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}
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bool createdir(const char *path)
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{
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size_t len = strlen(path);
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if(path[len-1]==PATHDIV)
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{
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static string strip;
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path = copystring(strip, path, len);
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}
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#ifdef WIN32
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return CreateDirectory(path, nullptr)!=0;
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#else
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return mkdir(path, 0777)==0;
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#endif
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}
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size_t fixpackagedir(char *dir)
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{
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path(dir);
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size_t len = strlen(dir);
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if(len > 0 && dir[len-1] != PATHDIV)
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{
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dir[len] = PATHDIV;
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dir[len+1] = '\0';
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}
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return len;
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}
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bool subhomedir(char *dst, int len, const char *src)
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{
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const char *sub = strstr(src, "$HOME");
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if(!sub) sub = strchr(src, '~');
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if(sub && sub-src < len)
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{
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#ifdef WIN32
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char home[MAX_PATH+1];
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home[0] = '\0';
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if(SHGetFolderPath(nullptr, CSIDL_PERSONAL, nullptr, 0, home) != S_OK || !home[0]) return false;
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#else
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const char *home = getenv("HOME");
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if(!home || !home[0]) return false;
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#endif
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dst[sub-src] = '\0';
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concatstring(dst, home, len);
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concatstring(dst, sub+(*sub == '~' ? 1 : strlen("$HOME")), len);
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}
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return true;
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}
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const char *sethomedir(const char *dir)
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{
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string pdir;
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copystring(pdir, dir);
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if(!subhomedir(pdir, sizeof(pdir), dir) || !fixpackagedir(pdir)) return nullptr;
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copystring(homedir, pdir);
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return homedir;
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}
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const char *addpackagedir(const char *dir)
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{
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string pdir;
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copystring(pdir, dir);
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if(!subhomedir(pdir, sizeof(pdir), dir) || !fixpackagedir(pdir)) return nullptr;
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char *filter = pdir;
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for(;;)
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{
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static int len = strlen("media");
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filter = strstr(filter, "media");
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if(!filter) break;
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if(filter > pdir && filter[-1] == PATHDIV && filter[len] == PATHDIV) break;
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filter += len;
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}
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packagedir &pf = packagedirs.add();
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pf.dir = filter ? newstring(pdir, filter-pdir) : newstring(pdir);
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pf.dirlen = filter ? filter-pdir : strlen(pdir);
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pf.filter = filter ? newstring(filter) : nullptr;
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pf.filterlen = filter ? strlen(filter) : 0;
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return pf.dir;
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}
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const char *findfile(const char *filename, const char *mode)
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{
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static string s;
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if(homedir[0])
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{
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formatstring(s, "%s%s", homedir, filename);
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if(fileexists(s, mode)) return s;
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if(mode[0]=='w' || mode[0]=='a')
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{
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string dirs;
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copystring(dirs, s);
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char *dir = strchr(dirs[0]==PATHDIV ? dirs+1 : dirs, PATHDIV);
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while(dir)
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{
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*dir = '\0';
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if(!fileexists(dirs, "d") && !createdir(dirs)) return s;
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*dir = PATHDIV;
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dir = strchr(dir+1, PATHDIV);
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}
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return s;
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}
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}
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if(mode[0]=='w' || mode[0]=='a') return filename;
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loopv(packagedirs)
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{
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packagedir &pf = packagedirs[i];
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if(pf.filter && strncmp(filename, pf.filter, pf.filterlen)) continue;
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formatstring(s, "%s%s", pf.dir, filename);
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if(fileexists(s, mode)) return s;
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}
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if(mode[0]=='e') return nullptr;
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return filename;
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}
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bool listdir(const char *dirname, bool rel, const char *ext, vector<char *> &files)
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{
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size_t extsize = ext ? strlen(ext)+1 : 0;
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#ifdef WIN32
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defformatstring(pathname, rel ? ".\\%s\\*.%s" : "%s\\*.%s", dirname, ext ? ext : "*");
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WIN32_FIND_DATA FindFileData;
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HANDLE Find = FindFirstFile(pathname, &FindFileData);
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if(Find != INVALID_HANDLE_VALUE)
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{
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do {
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if(!ext) files.add(newstring(FindFileData.cFileName));
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else
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{
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size_t namelen = strlen(FindFileData.cFileName);
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if(namelen > extsize)
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{
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namelen -= extsize;
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if(FindFileData.cFileName[namelen] == '.' && strncmp(FindFileData.cFileName+namelen+1, ext, extsize-1)==0)
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files.add(newstring(FindFileData.cFileName, namelen));
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}
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}
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} while(FindNextFile(Find, &FindFileData));
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FindClose(Find);
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return true;
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}
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#else
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defformatstring(pathname, rel ? "./%s" : "%s", dirname);
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DIR *d = opendir(pathname);
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if(d)
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{
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struct dirent *de;
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while((de = readdir(d)) != nullptr)
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{
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if(!ext) files.add(newstring(de->d_name));
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else
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{
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size_t namelen = strlen(de->d_name);
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if(namelen > extsize)
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{
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namelen -= extsize;
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if(de->d_name[namelen] == '.' && strncmp(de->d_name+namelen+1, ext, extsize-1)==0)
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files.add(newstring(de->d_name, namelen));
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}
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}
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}
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closedir(d);
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return true;
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}
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#endif
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else return false;
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}
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int listfiles(const char *dir, const char *ext, vector<char *> &files)
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{
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string dirname;
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copystring(dirname, dir);
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path(dirname);
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size_t dirlen = strlen(dirname);
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while(dirlen > 1 && dirname[dirlen-1] == PATHDIV) dirname[--dirlen] = '\0';
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int dirs = 0;
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if(listdir(dirname, true, ext, files)) dirs++;
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string s;
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if(homedir[0])
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{
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formatstring(s, "%s%s", homedir, dirname);
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if(listdir(s, false, ext, files)) dirs++;
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}
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loopv(packagedirs)
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{
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packagedir &pf = packagedirs[i];
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if(pf.filter && strncmp(dirname, pf.filter, dirlen == pf.filterlen-1 ? dirlen : pf.filterlen))
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continue;
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formatstring(s, "%s%s", pf.dir, dirname);
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if(listdir(s, false, ext, files)) dirs++;
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}
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#ifndef STANDALONE
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dirs += listzipfiles(dirname, ext, files);
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#endif
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return dirs;
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}
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