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C/C++ Users Group Library 1996 July
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C-C++ Users Group Library July 1996.iso
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vol_200
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216_01
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scanfils.lst
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1980-01-01
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PAGE 1
10-23-86
23:01:46
Line# Source Line Microsoft C Compiler Version 3.00.17
1 /* scanfils.c
2 *
3 * Read in two directory listings that have been run through the SORT
4 * utility. Files names that have a changed date/time or that are in the
5 * new directory listing but not the old have a COPY command generated
6 * in an output file.
7 * Note that files that appear in the old listing but not the new must have
8 * been deleted between the 2 listings. Although an ERASE statement could
9 * be generated, that's kinda dangerous, so an ECHO is generated instead.
10 *
11 * Example of usage:
12 * dir | sort >glopold
13 * ... other processing ...
14 * dir | sort >glopnew
15 * scanfils glopold glopnew d: >savefils.bat
16 * savefils
17 *
18 * Suppose the directory originally contained files A, B, C, D, E, and F.
19 * Other procesing is done. Now the directory contains files A, C, D, E,
20 * and G. In addition, file A was updated.
21 * SCANFILS will generate the following statements in its output:
22 * copy A d:
23 * echo B
24 * echo F
25 * copy G d:
26 * (The "d:" cones from the command line, see example invocation above).
27 * Note that the filenames that are input to this utility on the command
28 * line will be ignored insofar as generating any output lines (but only
29 * if the names are simple, ie don't contain drive or directory). This
30 * means that when used in the example above, no COPY will be generated
31 * for GLOPOLD or GLOPNEW even though they will appear in the directory
32 * listing.
33 * In addition, "X files added, Y files deleted, Z files changed" will
34 * appear on the standard ERROR output as a report.
35 *
36 */
37
38 #include "stdio.h"
39 #include "process.h" /* For exit () */
40 #include "stdlib.h" /* For perror () */
41 #include "memory.h" /* For memcmp, et al */
42 #include "string.h" /* For strcmp, et al */
43
44 char odir[12], ndir[12];
45
46 main (argc, argv, envp)
47
48 int argc;
49 char *argv[];
50 char *envp[];
51
52 {
53 void usage ();
54 void rl ();
PAGE 2
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Line# Source Line Microsoft C Compiler Version 3.00.17
55 void gcopy (), gecho ();
56 FILE *old, *new;
57 int added = 0, changed = 0, deleted = 0;
58 char lold[80], lnew[80];
59 int cresult;
60 char *p;
61
62 if (argc != 4)
63 usage ();
64
65 if (! (old = fopen (argv[1], "r"))) {
66 perror ("scanfils: Unable to open \"old\" directory file");
67 exit (1);
68 }
69
70 if (! (new = fopen (argv[2], "r"))) {
71 perror ("scanfils: Unable to open \"new\" directory file");
72 exit (1);
73 }
74
75 /* Generate filenames in "dir" format for both old and new files */
76 memset (odir, ' ', 12);
77 if (! strpbrk (argv[1], "/\:")) {
78 if (p = strchr (argv[1], '.')) {
79 memcpy (odir, argv[1], p-argv[1]);
80 memcpy (odir+9, p+1, strlen (p+1));
81 } else {
82 memcpy (odir, argv[1], strlen (argv[1]));
83 }
84 }
85 for (p = odir; p < odir+12; p++)
86 *p = toupper (*p);
***** i:scanfils.c(86) : warning 51: data conversion
87
88 memset (ndir, ' ', 12);
89 if (! strpbrk (argv[2], "/\:")) {
90 if (p = strchr (argv[2], '.')) {
91 memcpy (ndir, argv[2], p-argv[2]);
92 memcpy (ndir+9, p+1, strlen (p+1));
93 } else {
94 memcpy (ndir, argv[2], strlen (argv[2]));
95 }
96 }
97 for (p = ndir; p < ndir+12; p++)
98 *p = toupper (*p);
***** i:scanfils.c(98) : warning 51: data conversion
99
100 /* Prime the comparison arrays */
101 rl (old, lold, sizeof (lold));
102 rl (new, lnew, sizeof (lnew));
103
104 /* Go thru the files until eof on both */
105 while (lold[0] != '\177' && lnew[0] != '\177') {
106 cresult = memcmp (lold, lnew, 12);
PAGE 3
10-23-86
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Line# Source Line Microsoft C Compiler Version 3.00.17
107 if (cresult < 0) { /* old file deleted */
108 ++deleted;
109 gecho (lold);
110 rl (old, lold, sizeof (lold));
111 } else if (cresult == 0) { /* same file names */
112 if (strcmp (lold, lnew)) { /* ... different attr */
113 ++changed;
114 gcopy (lnew, argv[3]);
115 }
116 rl (old, lold, sizeof (lold));
117 rl (new, lnew, sizeof (lnew));
118 } else { /* new file added */
119 ++added;
120 gcopy (lnew, argv[3]);
121 rl (new, lnew, sizeof (lnew));
122 }
123 }
124
125 /* Display summary */
126 fprintf (stderr, "scanfils: %d added, %d deleted, %d changed", added,
127 deleted, changed);
128 return (0);
main Local Symbols
Name Class Offset Register
changed . . . . . . . . . . . . auto -00ae
lold. . . . . . . . . . . . . . auto -00ac
lnew. . . . . . . . . . . . . . auto -005c
added . . . . . . . . . . . . . auto -000c
p . . . . . . . . . . . . . . . auto -000a
deleted . . . . . . . . . . . . auto -0008
old . . . . . . . . . . . . . . auto -0006
new . . . . . . . . . . . . . . auto -0004
cresult . . . . . . . . . . . . auto -0002
argc. . . . . . . . . . . . . . param 0004
argv. . . . . . . . . . . . . . param 0006
envp. . . . . . . . . . . . . . param 0008
129 }
130
131 /* gcopy
132 *
133 * Generate a COPY command to the standard output.
134 */
135
136 void gcopy (s, d)
137
138 char *s; /* string containing filename (dir listing fmt) */
139 char *d; /* string containing name of destination drive */
140
141 {
142 char *p;
PAGE 4
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Line# Source Line Microsoft C Compiler Version 3.00.17
143
144 p = strchr (s, ' ');
145 *p = '\0';
146 *(s+12) = '\0';
147 if (memcmp (s+9, " ", 3)) /* if extension present */
148 printf ("COPY %s.%s %s\n", s, s+9, d);
149 else
150 printf ("COPY %s %s\n", s, d);
151 *p = ' ';
152 *(s+12) = ' ';
153 return;
gcopy Local Symbols
Name Class Offset Register
p . . . . . . . . . . . . . . . auto -0002
s . . . . . . . . . . . . . . . param 0004
d . . . . . . . . . . . . . . . param 0006
154 }
155
156 /* gecho
157 *
158 * Generate an ECHO command to the stand
