Commit | Line | Data |
---|---|---|
c7adcd0b BJ |
1 | .th MKSTR VI 8/22/77 |
2 | .sh NAME | |
3 | mkstr \- create an error message file by massaging C source | |
4 | .sh SYNOPSIS | |
5 | .bd mkstr | |
6 | [ | |
7 | .bd \- | |
8 | ] | |
9 | message-file prefix file ... | |
10 | .sh DESCRIPTION | |
11 | .it Mkstr | |
12 | is used to create files of error messages. | |
13 | Its use can make programs with large numbers of error diagnostics much | |
14 | smaller, and reduce system overhead in running the program as the | |
15 | error messages do not have to be constantly swapped in and out. | |
16 | .s3 | |
17 | .it Mkstr | |
18 | will process each of the specified | |
19 | .it files, | |
20 | placing a massaged version of the input file in a file whose name | |
21 | consists of the specified | |
22 | .it prefix | |
23 | and the original name. | |
24 | A typical usage of | |
25 | .it mkstr | |
26 | would be | |
27 | .dt | |
28 | .s3 | |
29 | mkstr pi_strings temp/ *.c | |
30 | .s3 | |
31 | This command would cause all the error messages from the C source | |
32 | files in the current directory to be placed in the file | |
33 | .it pi_strings | |
34 | and processed copies of the source for these files to be placed in | |
35 | the (existing) directory | |
36 | .it temp. | |
37 | .s3 | |
38 | To process the error messages in the source to the message file | |
39 | .it mkstr | |
40 | keys on the string | |
41 | \%``error("'' | |
42 | in the input stream. | |
43 | Each time it occurs, the C string starting at the `"' is placed | |
44 | in the message file followed by a null character and a new-line character; | |
45 | the null character terminates the message so it can be easily used | |
46 | when retrieved, the new-line character makes it possible to sensibly | |
47 | .it cat | |
48 | the error message file to see its contents. | |
49 | The massaged copy of the input file then contains a | |
50 | .it seek | |
51 | pointer into the file which can be used to retrieve the message, i.e.: | |
52 | .s3 | |
53 | \fBchar\fR efilname[] "/usr/lib/pi_strings"; | |
54 | \fBint\fR efil -1; | |
55 | ||
56 | error(a1, a2, a3, a4) | |
57 | { | |
58 | char buf[256]; | |
59 | ||
60 | \fBif\fR (efil < 0) { | |
61 | efil = open(efilname, 0); | |
62 | \fBif\fR (efil < 0) { | |
63 | .br | |
64 | oops: | |
65 | perror(efilname); | |
66 | exit(1); | |
67 | } | |
68 | } | |
69 | \fBif\fR (seek(efil, a1, 0)) | |
70 | \fBgoto\fR oops; | |
71 | \fBif\fR (read(efil, buf, 256) <= 0) | |
72 | \fBgoto\fR oops; | |
73 | printf(buf, a2, a3, a4); | |
74 | } | |
75 | .s3 | |
76 | The optional | |
77 | .bd \- | |
78 | causes the error messages to be placed at the end of the specified | |
79 | message file for recompiling part of a large | |
80 | \fImkstr\fR\|ed | |
81 | program. | |
82 | .sh SEE\ ALSO | |
83 | seek (II) | |
84 | .sh AUTHORS | |
85 | William Joy and Charles Haley | |
86 | .sh BUGS |