1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
|
/*
* PDBDIR.C - provides a directory capability for PDBLib
*
* Source Version: 9.0
* Software Release #92-0043
*
*/
#include "cpyright.h"
#include "pdb.h"
int
_PD_link_attribute = FALSE;
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* PD_CD - change the current working directory
* - The directory may be specified by an absolute or relative path.
*/
int PD_cd(file, dirname)
PDBfile *file;
char *dirname;
{char name[MAXLINE];
syment *ep;
PD_err[0] = '\0';
if (file == NULL)
{sprintf(PD_err, "ERROR: BAD FILE ID - PD_CD\n");
return(FALSE);};
if (dirname == NULL)
strcpy(name, "/");
else
{strcpy(name, _PD_fixname(file, dirname));
if (name[strlen(name) - 1] != '/')
strcat(name, "/");};
ep = PD_inquire_entry(file, name, FALSE, NULL);
if (ep == NULL)
{if (dirname == NULL)
return(FALSE);
else
{if (strcmp(name, "/") != 0)
{name[strlen(name) - 1] = '\0';
ep = PD_inquire_entry(file, name, FALSE, NULL);
strcat(name, "/");};
if (ep == NULL)
{sprintf(PD_err,
"ERROR: DIRECTORY %s NOT FOUND - PD_CD\n",
dirname);
return(FALSE);};};};
if (strcmp(ep->type, "Directory") != 0)
{sprintf(PD_err, "ERROR: BAD DIRECTORY %s - PD_CD\n", dirname);
return(FALSE);}
else
{if (file->current_prefix)
SFREE(file->current_prefix);
file->current_prefix = SC_strsavef(name, "char*:PD_CD:name");}
return(TRUE);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* PD_LN - create a link to a variable
* - This function simply installs a new symbol table entry. The new
* - syment is a copy of an already existing one, but with a new name.
*/
int PD_ln(file, oldname, newname)
PDBfile *file;
char *oldname, *newname;
{syment *oldep;
char newpath[MAXLINE], oldpath[MAXLINE], dirname[MAXLINE];
char *nname, *s, **avl;
PD_err[0] = '\0';
if (file == NULL)
{sprintf(PD_err, "ERROR: BAD FILE ID - PD_LN\n");
return(FALSE);};
if (oldname == NULL)
{sprintf(PD_err, "ERROR: VARIABLE NAME NULL - PD_LN\n");
return(FALSE);};
/* if opened in read-only mode */
if (file->mode == PD_OPEN)
{sprintf(PD_err, "ERROR: FILE OPENED READ-ONLY - PD_LN\n");
return(FALSE);};
strcpy(newpath, _PD_fixname(file, newname));
nname = SC_firsttok(newpath, ".([ ");
strcpy(oldpath, _PD_fixname(file, oldname));
/* make sure the directory in newname already exists */
strcpy(dirname, nname);
s = strrchr(dirname, '/');
if ((s != NULL) && (PD_has_directories(file)))
{s[1] = '\0';
if (PD_inquire_entry(file, dirname, FALSE, NULL) == NULL)
{dirname[strlen(dirname) - 1] = '\0';
sprintf(PD_err,
"ERROR: DIRECTORY %s DOES NOT EXIST - PD_LN\n", dirname);
return(FALSE);};};
oldep = PD_inquire_entry(file, oldpath, TRUE, NULL);
if (oldep == NULL)
{sprintf(PD_err, "ERROR: VARIABLE %s NOT FOUND - PD_LN\n", oldname);
return(FALSE);};
_PD_e_install(nname, oldep, file->symtab);
if (_PD_link_attribute)
{if (!PD_inquire_attribute(file, "LINK", NULL))
if (!PD_def_attribute(file, "LINK", "char *"))
{sprintf(PD_err,
"ERROR: CANNOT CREATE LINK ATTRIBUTE - PD_LN\n");
return(FALSE);};
avl = FMAKE(char *, "PD_LN:avl");
*avl = SC_strsavef(_PD_fixname(file, oldname),
"char*:PD_LN:fname");
if (!PD_set_attribute(file, nname, "LINK", (byte *) avl))
{sprintf(PD_err, "ERROR: CANNOT SET LINK ATTRIBUTE - PD_LN\n");
return(FALSE);};};
return(TRUE);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* PD_LS - return a list of all variables and directories of the specified
* - type in the specified directory. If type is null, all types are
* - returned. If path is null, the root directory is searched.
* - Directories are terminated with a slash.
*/
char **PD_ls(file, path, type, num)
PDBfile *file;
char *path;
char *type;
int *num;
{syment *ep;
char **varlist, **outlist;
char *name;
char pattern[MAXLINE];
int ne, nvars, i, has_dirs, head, pass;
PD_err[0] = '\0';
*num = 0;
ne = file->symtab->nelements;
if (file == NULL)
{sprintf(PD_err, "ERROR: BAD FILE ID - PD_LS\n");
return(NULL);};
if (num == NULL)
{sprintf(PD_err, "ERROR: LAST ARGUMENT NULL - PD_LS\n");
return(NULL);};
if (ne == 0)
return(NULL);
/* determine if file contains directories and
* build a pattern which names must match e.g., '/dir/abc*'
*/
if (PD_has_directories(file))
{has_dirs = TRUE;
if (path == NULL)
{if (strcmp(PD_pwd(file), "/") == 0)
strcpy(pattern, "/*");
else
sprintf(pattern, "%s/*", PD_pwd(file));}
else
{strcpy(pattern, _PD_fixname(file, path));
ep = PD_inquire_entry(file, pattern, FALSE, NULL);
if ((ep != NULL) && (strcmp(ep->type, "Directory") == 0))
{if (pattern[strlen(pattern) - 1] == '/')
strcat(pattern, "*");
else
strcat(pattern, "/*");}
else
{if (pattern[strlen(pattern) - 1] != '/')
{strcat(pattern, "/");
ep = PD_inquire_entry(file, pattern, FALSE, NULL);
if ((ep != NULL) && (strcmp(ep->type, "Directory") == 0))
strcat(pattern, "*");
else
pattern[strlen(pattern) - 1] = '\0';}
else
{pattern[strlen(pattern) - 1] = '\0';
ep = PD_inquire_entry(file, pattern, FALSE, NULL);
if ((ep != NULL) && (strcmp(ep->type, "Directory") == 0))
strcat(pattern, "/*");
else
strcat(pattern, "/");};};};}
else
{has_dirs = FALSE;
if (path == NULL)
strcpy(pattern, "*");
else
strcpy(pattern, path);};
/* Generate the list of matching names. Note that this returns items which
* are in the requested directory AND items which are in sub-directories of
* the requested directory. In other words, all names which BEGIN with the
* requested pattern are returned.
*/
nvars = 0;
outlist = FMAKE_N(char *, ne + 1, "PD_LS:outlist");
/* The second pass is in case variables were written to the file before
* the first directory was created. Such variables lack an initial slash.
*/
for (pass = 1; pass <= 2; pass++)
{if (pass == 2)
if (has_dirs && (strchr(pattern + 1, '/') == NULL))
strcpy(pattern, pattern + 1);
else
break;
varlist = SC_hash_dump(file->symtab, pattern);
if ((varlist == NULL) || (varlist[0] == NULL))
continue;
/* save only those variables which are IN the requested directory
* (not in sub-directories), and are of the requested type
*/
for (i = 0; (i < ne) && (varlist[i] != NULL); i++)
/* The entry '/' (the root directory) is a special case. It
* is not a child of any directory, so should be ignored.
*/
{if (strcmp("/", varlist[i]) == 0)
continue;
/* check to see if type of this variable matches request */
if (type != NULL)
{ep = PD_inquire_entry(file, varlist[i], FALSE, NULL);
if (strcmp(ep->type, type) != 0)
continue;};
/* If here, then variable is of right type. If this file has directories,
* check for any more slashes (/'s) in the name. If any are found, this
* is not a leaf element. NOTE: if directories are not used, slashes are
* valid charcters in file names.
*/
if (has_dirs)
{if (pattern[0] != '/')
head = 0;
else
head = strlen(pattern) - strlen(strrchr(pattern, '/')) + 1;
name = &(varlist[i])[head];
if ((strlen(name) == 0) ||
((pass == 2) && (name[0] == '/')) ||
((strchr(name, '/') != NULL) &&
(strchr(name, '/') != ((name + strlen(name) - 1)))))
continue;}
else
name = varlist[i];
/* variable is of right type and is a leaf in the requested directory */
outlist[nvars++] = name;};};
SFREE(varlist);
/* store a null string to terminate list (just a precaution) */
outlist[nvars] = NULL;
if (has_dirs)
SC_string_sort(outlist, nvars);
*num = nvars;
return(outlist);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* PD_MKDIR - create a directory
* - The directory may be specified by an absolute or relative path.
*/
int PD_mkdir(file, dirname)
PDBfile *file;
char *dirname;
{int *dir, ret;
char name[MAXLINE], head[MAXLINE];
char *s;
static int dir_num = 0;
PD_err[0] = '\0';
if (file == NULL)
{sprintf(PD_err, "ERROR: BAD FILE ID - PD_MKDIR\n");
return(FALSE);};
if (dirname == NULL)
{sprintf(PD_err, "ERROR: DIRECTORY NAME NULL - PD_MKDIR\n");
return(FALSE);};
/* define type "Directory", if it hasn't been already */
if (!PD_has_directories(file))
{if ((PD_defncv(file, "Directory", 1, 0)) == NULL)
return(FALSE);
/* write out the root directory */
dir = FMAKE(int,"PD_MKDIR:dir");
*dir = dir_num;
ret = PD_write(file, "/", "Directory", dir);
SFREE(dir);
if (!ret)
return(FALSE);
file->current_prefix = SC_strsavef("/", "char*:PD_MKDIR:slash");
dir_num++;}
/* build an absolute pathname */
strcpy(name, _PD_fixname(file, dirname));
if (name[strlen(name) - 1] != '/')
strcat(name, "/");
/* make sure this directory hasn't already been created */
if (PD_inquire_entry(file, name, FALSE, NULL) != NULL)
{sprintf(PD_err,
"ERROR: DIRECTORY %s ALREADY EXISTS - PD_MKDIR\n", name);
return(FALSE);};
/* make sure the next higher level directory already exists */
strcpy(head, name);
head[strlen(head) - 1] = '\0';
s = strrchr(head, '/');
if (s != NULL)
{s[1] = '\0';
if (PD_inquire_entry(file, head, FALSE, NULL) == NULL)
{head[strlen(head) - 1] = '\0';
sprintf(PD_err,
"ERROR: DIRECTORY %s DOES NOT EXIST - PD_MKDIR\n", head);
return(FALSE);};};
/* write the directory variable */
dir = FMAKE(int,"PD_MKDIR:dir");
*dir = dir_num;
ret = PD_write(file, name, "Directory", dir);
SFREE(dir);
if (ret)
dir_num++;
return(ret);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* PD_PWD - return the current working directory */
char *PD_pwd(file)
PDBfile *file;
{static char cwd[MAXLINE];
PD_err[0] = '\0';
if (file == NULL)
{sprintf(PD_err, "ERROR: BAD FILE ID - PF_PWD\n");
return(NULL);};
if ((file->current_prefix == NULL) ||
(strcmp(file->current_prefix, "/") == 0))
strcpy(cwd, "/");
else
{strcpy(cwd, file->current_prefix);
cwd[strlen(cwd) - 1] = '\0';}
return(cwd);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
/* _PD_FIXNAME - make full pathname from current working directory
* - and the given pathname (absolute or relative)
*/
char *_PD_fixname(file, inname)
PDBfile *file;
char *inname;
{static char outname[MAXLINE];
char *node, *s;
char tmpstr[MAXLINE];
if ((file == NULL) || (inname == NULL))
return(NULL);
outname[0] = '\0';
if (!PD_has_directories(file))
/* if no directories, just copy verbatim */
strcpy(outname, inname);
else
/* Break path into slash-separated tokens.
* Process each node individually.
*/
{if (inname[0] != '/')
strcpy(outname, PD_pwd(file));
strcpy(tmpstr, inname);
node = (char *) SC_strtok(tmpstr, "/", s);
while (node != NULL)
{if (strcmp(".", node) == 0)
{/* no-op */}
/* go up one level, unless already at top */
else if (strcmp("..", node) == 0)
{if (strcmp("/", outname) != 0)
{char *s;
if (outname[strlen(outname) - 1] == '/')
outname[strlen(outname) - 1] = '\0';
s = strrchr(outname, '/');
if (s != NULL)
s[0] = '\0';};}
/* append to end of current path */
else
{if (outname[strlen(outname) - 1] != '/')
strcat(outname, "/");
strcat(outname, node);}
node = (char *) SC_strtok(NULL, "/", s);};
if ((inname[strlen(inname) - 1] == '/') &&
(outname[strlen(outname) - 1] != '/'))
strcat(outname, "/");};
if (outname[0] == '\0')
strcpy(outname, "/");
return(outname);}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
|
