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1.1 root 1: #include "univ.h"
2: #include <CC/sys/types.h>
3: #include <sys/param.h>
4: #include <CC/sys/stat.h>
5: #include <sys/dir.h>
6: #include "wd.h"
7: SRCFILE("wd.c")
8:
9: void NewWd() { new Wd; }
10:
11: Wd::Wd()
12: {
13: pad = new Pad((PadRcv*) this);
14: pad->name("pwd/cd");
15: pad->banner("Working Directory:");
16: prevwd = 0;
17: pwd();
18: }
19:
20: Index Wd::carte()
21: {
22: struct direct dirbuf;
23: struct stat stbuf;
24: Menu m;
25:
26: trace( "%d.carte()", this ); OK(ZIndex);
27: int fd = ::open(".", 0);
28: if( fd >= 0 ) {
29: while( read(fd, (char*) &dirbuf, sizeof dirbuf) > 0 ){
30: char dn[16];
31: sprintf(dn, "%0.14s", dirbuf.d_name);
32: int len = strlen(dn);
33: if( len>=3 && dn[len-2]=='.' ) continue;
34: if( dirbuf.d_ino == 0
35: || ::stat(dn, &stbuf)== -1
36: || (stbuf.st_mode&S_IFMT)!=S_IFDIR )
37: continue;
38: long opand = (long) sf("%s/%s", getwd, dn);
39: m.sort(sf("%s\240", dn), (Action)&Wd::kbd, opand);
40: }
41: ::close(fd);
42: }
43: return m.index();
44: }
45:
46: char *Getwd()
47: {
48: char *dot = ".", *dotdot = "..", *name;
49: int file, off = -1;
50: struct stat d, dd;
51: struct direct dir;
52: int rdev, rino;
53:
54: name = "";
55: ::stat("/", &d);
56: rdev = d.st_dev;
57: rino = d.st_ino;
58: for (;;) {
59: ::stat(dot, &d);
60: if(d.st_ino==rino && d.st_dev==rdev) goto ChDir;
61: if((file = open(dotdot,0)) < 0)
62: return "can't get working directory";
63: fstat(file, &dd);
64: chdir(dotdot);
65: if(d.st_dev == dd.st_dev) {
66: if(d.st_ino == dd.st_ino) goto ChDir;
67: do
68: if (read(file,(char*)&dir,sizeof(dir))<sizeof(dir))
69: return "can't get working directory";
70: while (dir.d_ino != d.st_ino);
71: }
72: else do {
73: if(read(file,(char*)&dir,sizeof(dir))<sizeof(dir))
74: return "can't get working directory";
75: ::stat(dir.d_name, &dd);
76: } while(dd.st_ino != d.st_ino || dd.st_dev != d.st_dev);
77: close(file);
78: name = sf( name[0]?"%s/%s":"%s", dir.d_name, name );
79: }
80: ChDir:
81: name = sf("/%s",name);
82: if( chdir(name) == -1 ) return "chdir error";
83: return name;
84: }
85:
86: char *Wd::help()
87: {
88: trace( "%d.help()", this );
89: return "[cd] <path> {change working directory}";
90: }
91:
92: char *Wd::kbd(char *s)
93: {
94: trace( "%d.kbd(%s)", this, s ); OK("kbd");
95: if( s[0]=='c' && s[1]=='d' && (s[2]==' '||s[2]==0) ) s += 2;
96: while( *s == ' ' ) ++s;
97: if( *s==0 ){
98: char *getenv(char*), *e = getenv("HOME");
99: if( e ) s = e;
100: }
101: if( chdir(s) == -1 ){
102: pad->insert(key++, "cannot cd %s", s);
103: prevwd = 0;
104: }
105: pwd(SELECTLINE);
106: return 0;
107: }
108:
109: void Wd::pwd(Attrib a)
110: {
111: if( prevwd )
112: pad->insert(key, a, (PadRcv*)this, ix, "%s", getwd);
113: getwd = Getwd();
114: ix = carte();
115: pad->menu(ix);
116: pad->insert(++key, a|DONT_CUT, (PadRcv*)this, ix, "wd=%s", getwd);
117: prevwd = getwd;
118: }
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