1 | /* $Id: kmkbuiltin.c 229 2005-02-09 12:25:36Z bird $ */
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2 | /** @file
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3 | *
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4 | * kMk Builtin command execution.
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5 | *
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6 | * Copyright (c) 2005 knut st. osmundsen <[email protected]>
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7 | *
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8 | *
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9 | * This file is part of kBuild.
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10 | *
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11 | * kBuild is free software; you can redistribute it and/or modify
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12 | * it under the terms of the GNU General Public License as published by
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13 | * the Free Software Foundation; either version 2 of the License, or
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14 | * (at your option) any later version.
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15 | *
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16 | * kBuild is distributed in the hope that it will be useful,
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | * GNU General Public License for more details.
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20 | *
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21 | * You should have received a copy of the GNU General Public License
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22 | * along with kBuild; if not, write to the Free Software
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23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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24 | *
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25 | */
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26 |
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27 | #include <string.h>
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28 | #include <stdlib.h>
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29 | #include <stdio.h>
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30 | #include <ctype.h>
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31 | #include "kmkbuiltin.h"
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32 |
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33 | extern char **environ;
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34 |
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35 | extern int kmk_builtin_cp(int argc, char **argv, char **envp);
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36 | extern int kmk_builtin_chmod(int argc, char **argv, char **envp);
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37 | extern int kmk_builtin_echo(int argc, char **argv, char **envp);
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38 | extern int kmk_builtin_mkdir(int argc, char **argv, char **envp);
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39 | extern int kmk_builtin_mv(int argc, char **argv, char **envp);
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40 | extern int kmk_builtin_rm(int argc, char **argv, char **envp);
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41 | extern int kmk_builtin_rmdir(int argc, char **argv, char **envp);
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42 |
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43 | int kmk_builtin_command(const char *pszCmd)
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44 | {
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45 | int argc;
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46 | char **argv;
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47 | char *psz;
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48 | int rc;
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49 |
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50 | /*
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51 | * Check and skip the prefix.
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52 | */
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53 | if (strncmp(pszCmd, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
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54 | {
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55 | printf("kmk_builtin: Invalid command prefix '%s'!\n", pszCmd);
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56 | return 1;
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57 | }
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58 |
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59 | /*
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60 | * Parse arguments.
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61 | */
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62 | argc = 0;
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63 | argv = NULL;
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64 | while (*pszCmd)
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65 | {
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66 | const char *pszEnd;
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67 | const char *pszNext;
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68 | int fEscaped = 0;
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69 | size_t cch;
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70 |
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71 | /*
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72 | * Find start and end of the current command.
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73 | */
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74 | if (*pszCmd == '"' || *pszCmd == '\'')
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75 | {
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76 | pszEnd = pszCmd;
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77 | for (;;)
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78 | {
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79 | pszEnd = strchr(pszEnd + 1, *pszCmd);
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80 | if (!pszEnd)
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81 | {
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82 | printf("kmk_builtin: Unbalanced quote in argument %d: %s\n", argc + 1, pszCmd);
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83 | while (argc--)
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84 | free(argv[argc]);
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85 | free(argv);
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86 | return 1;
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87 | }
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88 | /* two quotes -> escaped quote. */
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89 | if (pszEnd[0] != pszEnd[1])
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90 | break;
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91 | fEscaped = 1;
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92 | }
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93 | pszNext = pszEnd + 1;
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94 | pszCmd++;
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95 | }
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96 | else
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97 | {
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98 | pszEnd = pszCmd;
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99 | while (!isspace(*pszEnd) && *pszEnd)
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100 | pszEnd++;
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101 | pszNext = pszEnd;
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102 | }
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103 |
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104 | /*
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105 | * Make argument.
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106 | */
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107 | if (!(argc % 16))
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108 | {
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109 | void *pv = realloc(argv, sizeof(char *) * (argc + 17));
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110 | if (!pv)
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111 | {
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112 | printf("kmk_builtin: out of memory. argc=%d\n", argc);
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113 | break;
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114 | }
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115 | argv = (char **)pv;
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116 | }
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117 | cch = pszEnd - pszCmd;
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118 | argv[argc] = malloc(cch + 1);
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119 | if (!argv[argc])
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120 | {
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121 | printf("kmk_builtin: out of memory. argc=%d len=%d\n", argc, pszEnd - pszCmd + 1);
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122 | break;
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123 | }
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124 | memcpy(argv[argc], pszCmd, cch);
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125 | argv[argc][cch] = '\0';
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126 |
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127 | /* unescape quotes? */
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128 | if (fEscaped)
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129 | {
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130 | char ch = pszCmd[-1];
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131 | char *pszW = argv[argc];
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132 | char *pszR = argv[argc];
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133 | while (*pszR)
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134 | {
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135 | if (*pszR == ch)
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136 | pszR++;
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137 | *pszW++ = *pszR++;
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138 | }
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139 | *pszW = '\0';
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140 | }
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141 | /* commit it */
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142 | argv[++argc] = NULL;
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143 |
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144 | /*
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145 | * Next
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146 | */
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147 | pszCmd = pszNext;
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148 | if (isspace(*pszCmd) && *pszCmd)
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149 | pszCmd++;
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150 | }
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151 |
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152 | /*
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153 | * Execute the command if parsing was successful.
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154 | */
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155 | if (!*pszCmd)
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156 | rc = kmk_builtin_command_parsed(argc, argv);
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157 | else
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158 | rc = 1;
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159 |
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160 | /* clean up and return. */
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161 | while (argc--)
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162 | free(argv[argc]);
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163 | free(argv);
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164 | return rc;
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165 | }
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166 |
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167 |
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168 | int kmk_builtin_command_parsed(int argc, char **argv)
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169 | {
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170 | const char *pszCmd = argv[0];
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171 | int rc;
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172 |
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173 | /*
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174 | * Check and skip the prefix.
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175 | */
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176 | if (strncmp(pszCmd, "kmk_builtin_", sizeof("kmk_builtin_") - 1))
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177 | {
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178 | printf("kmk_builtin: Invalid command prefix '%s'!\n", pszCmd);
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179 | return 1;
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180 | }
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181 | pszCmd += sizeof("kmk_builtin_") - 1;
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182 |
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183 | /*
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184 | * String switch on the command.
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185 | */
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186 | if (!strcmp(pszCmd, "cp"))
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187 | rc = kmk_builtin_cp(argc, argv, environ);
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188 | //else if (!strcmp(pszCmd, "chmod"))
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189 | // rc = kmk_builtin_chmod(argc, argv, environ);
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190 | else if (!strcmp(pszCmd, "echo"))
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191 | rc = kmk_builtin_echo(argc, argv, environ);
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192 | else if (!strcmp(pszCmd, "mkdir"))
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193 | rc = kmk_builtin_mkdir(argc, argv, environ);
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194 | //else if (!strcmp(pszCmd, "mv"))
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195 | // rc = kmk_builtin_mv(argc, argv, environ);
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196 | else if (!strcmp(pszCmd, "rm"))
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197 | rc = kmk_builtin_rm(argc, argv, environ);
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198 | //else if (!strcmp(pszCmd, "rmdir"))
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199 | // rc = kmk_builtin_rmdir(argc, argv, environ);
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200 | else
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201 | {
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202 | printf("kmk_builtin: Unknown command '%s'!\n", pszCmd);
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203 | return 1;
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204 | }
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205 | return rc;
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206 | }
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207 |
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