FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/help.c @ 619:f82551c77e58

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents 27d7d7e2d9bd
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
31
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module implements the fc-shell help facility.
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <stdio.h>
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <ctype.h>
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <string.h>
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <strings.h>
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdlib.h>
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10
53
27d7d7e2d9bd rvinterf/asyncshell/help.c: new help file location
Mychaela Falconia <falcon@freecalypso.org>
parents: 31
diff changeset
11 char help_file_pathname[] = "/opt/freecalypso/helpfiles/fc-shell.help";
31
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 show_help_topic(topic)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 char *topic;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 FILE *f;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 char linebuf[256];
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 char *cp, *np;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 int flag;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 f = fopen(help_file_pathname, "r");
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 if (!f) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 perror(help_file_pathname);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 return(-1);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 for (;;) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 if (!fgets(linebuf, sizeof linebuf, f)) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 printf("error: help topic \"%s\" not found\n", topic);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 fclose(f);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 return(-1);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 if (linebuf[0] != '=' || linebuf[1] != '=' || linebuf[2] != '=')
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 continue;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 for (cp = linebuf + 3; isspace(*cp); cp++)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 ;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 for (np = cp; *cp && !isspace(*cp); cp++)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 ;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 if (*cp)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 *cp++ = '\0';
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 if (!strcmp(np, topic))
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 break;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 for (flag = 0; fgets(linebuf, sizeof linebuf, f); ) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 if (linebuf[0] == '=' && linebuf[1] == '=' &&
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 linebuf[2] == '=') {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 if (flag)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 break;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 else
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 continue;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 fputs(linebuf, stdout);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 flag = 1;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 fclose(f);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 return(0);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 void
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 cmd_help(argstr)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 char *argstr;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62 char *argv[3], dbltopic[34];
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 int argc, rc;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 rc = parse_interactive_command_into_argv(argstr, argv, 0, 2, &argc);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 if (rc < 0)
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 return;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 switch (argc) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 case 0:
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 show_help_topic("main");
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 break;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 case 1:
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73 show_help_topic(argv[0]);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 break;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 case 2:
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 if (strlen(argv[0]) <= 16 && strlen(argv[1]) <= 16) {
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 sprintf(dbltopic, "%s:%s", argv[0], argv[1]);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 show_help_topic(dbltopic);
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 } else
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 printf("error: no such help topic\n");
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 break;
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 default:
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83 fprintf(stderr, "internal error in cmd_help(): bad argc\n");
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 abort();
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 }
5b4e345095c4 fc-shell help command implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 }