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annotate rvinterf/etmsync/dispatch.c @ 327:05874f1ddacb

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rvinterf & rvtdump: new decoding of G23/GPF packets
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 20 Apr 2014 20:39:53 +0000
parents 69e8ae2b5ba2
children
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rev   line source
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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 if (*cp == '"') {
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51 *ap++ = ++cp;
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52 while (*cp && *cp != '"')
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53 cp++;
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54 if (*cp != '"') {
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55 fprintf(stderr,
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56 "error: unterminated quoted string\n");
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57 return(ERROR_USAGE);
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58 }
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59 *cp++ = '\0';
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60 } else {
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61 *ap++ = cp;
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62 while (*cp && !isspace(*cp))
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63 cp++;
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64 if (*cp)
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65 *cp++ = '\0';
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66 }
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67 }
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68 if (ap - argv - 1 < tp->minargs) {
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69 fprintf(stderr, "error: too few arguments\n");
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70 return(ERROR_USAGE);
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71 }
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72 *ap = 0;
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73 return tp->func(ap - argv, argv);
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74 }
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75
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76 dispatch_ready_argv(argc, argv)
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77 char **argv;
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78 {
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79 struct cmdtab *tp;
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80
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81 for (tp = cmdtab; tp->cmd; tp++)
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82 if (!strcmp(tp->cmd, argv[0]))
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83 break;
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84 if (!tp->func) {
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85 fprintf(stderr, "error: no such command\n");
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86 return(ERROR_USAGE);
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87 }
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88 if (argc - 1 > tp->maxargs) {
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89 fprintf(stderr, "error: too many arguments\n");
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90 return(ERROR_USAGE);
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91 }
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92 if (argc - 1 < tp->minargs) {
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93 fprintf(stderr, "error: too few arguments\n");
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94 return(ERROR_USAGE);
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95 }
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96 return tp->func(argc, argv);
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97 }
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98
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99 cmd_exec(argc, argv)
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100 char **argv;
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101 {
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102 FILE *f;
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103 char linebuf[512], *cp;
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104 int lineno, retval = 0;
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105
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106 f = fopen(argv[1], "r");
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107 if (!f) {
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108 perror(argv[1]);
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109 return(ERROR_USAGE);
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110 }
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111 for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
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112 cp = index(linebuf, '\n');
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113 if (!cp) {
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114 fprintf(stderr, "%s line %d: missing newline\n",
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115 argv[1], lineno);
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116 fclose(f);
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117 return(ERROR_USAGE);
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118 }
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119 *cp = '\0';
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120 retval = parse_and_dispatch_cmd(linebuf, 1);
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121 if (retval)
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122 break;
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123 }
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124 fclose(f);
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125 return(retval);
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126 }
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127
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128 cmd_exit()
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129 {
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130 exit(0);
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131 }