FreeCalypso > hg > freecalypso-sw

annotate rvinterf/etmsync/dispatch.c @ 285:bb28ba9e82c5

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fc-fsio: file read primitive and hd command implemented
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 28 Feb 2014 06:16:02 +0000
parents 082d12a1651e
children 69e8ae2b5ba2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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276
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1 /*
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2 * This module implements the command dispatch for fc-fsio
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3 * and possibly other similar utilities in the future.
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4 */
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5
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6 #include <ctype.h>
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include "cmdtab.h"
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12 #include "exitcodes.h"
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13
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14 extern struct cmdtab cmdtab[];
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15
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16 parse_and_dispatch_cmd(cmd, is_script)
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17 char *cmd;
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18 {
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19 char *argv[MAX_CMD_ARGS+2];
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20 char *cp, **ap;
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21 struct cmdtab *tp;
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22
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23 for (cp = cmd; isspace(*cp); cp++)
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24 ;
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25 if (!*cp || *cp == '#')
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26 return(0);
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27 if (is_script)
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28 printf("Script command: %s\n", cp);
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29 argv[0] = cp;
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30 while (*cp && !isspace(*cp))
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31 cp++;
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32 if (*cp)
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33 *cp++ = '\0';
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34 for (tp = cmdtab; tp->cmd; tp++)
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35 if (!strcmp(tp->cmd, argv[0]))
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36 break;
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37 if (!tp->func) {
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38 fprintf(stderr, "error: no such command\n");
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39 return(ERROR_USAGE);
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40 }
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41 for (ap = argv + 1; ; ) {
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42 while (isspace(*cp))
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43 cp++;
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44 if (!*cp || *cp == '#')
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45 break;
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46 if (ap - argv - 1 >= tp->maxargs) {
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47 fprintf(stderr, "error: too many arguments\n");
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48 return(ERROR_USAGE);
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49 }
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50 *ap++ = cp;
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51 while (*cp && !isspace(*cp))
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52 cp++;
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53 if (*cp)
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54 *cp++ = '\0';
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55 }
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56 if (ap - argv - 1 < tp->minargs) {
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57 fprintf(stderr, "error: too few arguments\n");
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58 return(ERROR_USAGE);
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59 }
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60 *ap = 0;
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61 return tp->func(ap - argv, argv);
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62 }
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63
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64 dispatch_ready_argv(argc, argv)
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65 char **argv;
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66 {
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67 struct cmdtab *tp;
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68
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69 for (tp = cmdtab; tp->cmd; tp++)
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70 if (!strcmp(tp->cmd, argv[0]))
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71 break;
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72 if (!tp->func) {
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73 fprintf(stderr, "error: no such command\n");
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74 return(ERROR_USAGE);
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75 }
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76 if (argc - 1 > tp->maxargs) {
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77 fprintf(stderr, "error: too many arguments\n");
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78 return(ERROR_USAGE);
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79 }
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80 if (argc - 1 < tp->minargs) {
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81 fprintf(stderr, "error: too few arguments\n");
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82 return(ERROR_USAGE);
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83 }
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84 return tp->func(argc, argv);
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85 }
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86
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87 cmd_exec(argc, argv)
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88 char **argv;
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89 {
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90 FILE *f;
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91 char linebuf[512], *cp;
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92 int lineno, retval = 0;
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93
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94 f = fopen(argv[1], "r");
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95 if (!f) {
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96 perror(argv[1]);
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97 return(ERROR_USAGE);
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98 }
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99 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
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100 cp = index(linebuf, '\n');
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101 if (!cp) {
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102 fprintf(stderr, "%s line %d: missing newline\n",
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103 argv[1], lineno);
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104 fclose(f);
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105 return(ERROR_USAGE);
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106 }
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107 *cp = '\0';
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108 retval = parse_and_dispatch_cmd(linebuf, 1);
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109 if (retval)
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110 break;
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111 }
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112 fclose(f);
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113 return(retval);
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114 }
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115
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116 cmd_exit()
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117 {
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118 exit(0);
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119 }