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2435 | jelen | 1 | /* |
2 | * Copyright (c) 1987,1997, Prentice Hall |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use of the MINIX operating system in source and |
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6 | * binary forms, with or without modification, are permitted provided |
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7 | * that the following conditions are met: |
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2377 | konopa | 8 | |
2435 | jelen | 9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
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2377 | konopa | 11 | |
2435 | jelen | 12 | * - Redistributions in binary form must reproduce the above |
13 | * copyright notice, this list of conditions and the following |
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14 | * disclaimer in the documentation and/or other materials provided |
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15 | * with the distribution. |
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16 | |||
17 | * - Neither the name of Prentice Hall nor the names of the software |
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18 | * authors or contributors may be used to endorse or promote |
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19 | * products derived from this software without specific prior |
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20 | * written permission. |
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21 | |||
22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND |
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23 | * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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24 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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26 | * IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE |
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27 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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31 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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32 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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33 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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2377 | konopa | 34 | */ |
2435 | jelen | 35 | |
36 | /** @addtogroup FileSystemImpl |
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37 | * @{ |
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38 | */ |
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2377 | konopa | 39 | |
2435 | jelen | 40 | /** |
41 | * @file printing.c |
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42 | * @brief Functions for printing on console. |
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43 | */ |
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2377 | konopa | 44 | |
2435 | jelen | 45 | |
2377 | konopa | 46 | #include <string.h> |
47 | #include <ipc/ipc.h> |
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48 | #include <ipc/services.h> |
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49 | #include <async.h> |
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50 | #include "fs.h" |
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51 | #include "../console/console.h" |
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52 | |||
53 | #define TOTAL_CONVERSIONS 5 |
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54 | #define BUFF_SIZE 10 |
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55 | |||
56 | |||
2435 | jelen | 57 | /** |
58 | * Table of printing conversions for: d, i, u, c, %. |
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59 | */ |
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2377 | konopa | 60 | char conversions[TOTAL_CONVERSIONS]; |
61 | char format_string[3] = "%"; |
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62 | |||
63 | static int validate_string(char conv); |
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64 | |||
2435 | jelen | 65 | /** |
66 | * Connects to SERVICE_CONSOLE and initializes used data structures |
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67 | */ |
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2377 | konopa | 68 | int init_printing() |
69 | { |
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70 | |||
71 | /* Attempt to connect to SERVICE_CONSOLE fail. */ |
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72 | if (!connect_to_con(&con_phone, CON_CONN_ATTEMPTS)) |
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73 | return FALSE; |
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74 | |||
75 | conversions[0] = 'd'; |
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76 | conversions[1] = 'i'; |
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77 | conversions[2] = 'u'; |
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78 | conversions[3] = 'c'; |
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79 | conversions[4] = '%'; |
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80 | |||
81 | } |
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82 | |||
2435 | jelen | 83 | /** |
84 | * Check whether the conversion character matches the conversions table |
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85 | */ |
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2377 | konopa | 86 | int validate_string(char conv) |
87 | { |
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88 | |||
89 | int i; |
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90 | |||
91 | /* Check if the conversion character matches conversions table. */ |
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92 | for (i = 0; i < TOTAL_CONVERSIONS; i++){ |
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93 | if (conv == conversions[i]) { |
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94 | return TRUE; |
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95 | } |
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96 | } |
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97 | |||
98 | return FALSE; |
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99 | } |
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100 | |||
2435 | jelen | 101 | /** |
102 | * Prints char* on console |
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103 | */ |
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2377 | konopa | 104 | int print_console(char *str) |
105 | { |
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106 | |||
107 | int i, len; |
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108 | char c; |
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109 | |||
110 | /* Must be connected to the CONSOLE_SERVICE. */ |
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111 | if (con_phone < 0) |
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112 | return FALSE; |
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113 | |||
114 | len = strlen(str); |
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115 | if (len == 0) |
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116 | return TRUE; |
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117 | |||
118 | for (i = 0; i < len; i++) { |
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119 | c = *str++; |
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120 | async_req_2(con_phone, CONSOLE_PUTCHAR, c, 0, NULL, NULL); /* Do the work. */ |
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121 | } |
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122 | |||
123 | return TRUE; |
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124 | } |
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125 | |||
2435 | jelen | 126 | /** |
127 | * Prints int argument with specified conversion inside input string |
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128 | */ |
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2377 | konopa | 129 | int print_console_int(char *str, int arg) |
130 | { |
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131 | |||
132 | int i, retval, len, front_side, offset; |
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133 | char conversion; |
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134 | char buffer[BUFF_SIZE]; |
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135 | char *front, *back; |
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136 | |||
137 | len = strlen(str); |
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138 | |||
139 | if (len == 0) |
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140 | return TRUE; |
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141 | |||
142 | front = malloc((len+1) * sizeof(char)); |
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143 | back = malloc((len+1) * sizeof(char)); |
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144 | |||
145 | front_side = TRUE; |
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146 | |||
147 | /* Copy front side of source string. */ |
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148 | for (i = 0; i < len; i++) { |
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149 | if (str[i] == '%') { |
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150 | front_side = FALSE; |
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151 | break; |
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152 | } |
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153 | front[i] = str[i]; |
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154 | } |
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155 | |||
156 | /* Character '%' was not found. Print it in a normal way, without int argument. */ |
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157 | if (front_side) { |
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158 | return (print_console(str)); |
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159 | } |
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160 | |||
161 | /* Character '%' was the last in the input string - error. */ |
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162 | if (i == (len-1)) { |
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163 | return FALSE; |
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164 | } |
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165 | |||
166 | front[i] = '\0'; |
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167 | conversion = str[++i]; |
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168 | retval = validate_string(conversion); |
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169 | |||
170 | if (!retval) { |
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171 | return FALSE; |
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172 | } |
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173 | |||
174 | offset = ++i; |
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175 | |||
176 | /* Copy back side of source string. */ |
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177 | for (;i < len; i++) { |
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178 | back[i-offset] = str[i]; |
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179 | } |
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180 | |||
181 | back[i] = '\0'; |
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182 | |||
183 | /* Two characters '%' in source string. */ |
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184 | if (conversion == '%') { |
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185 | print_console(front); |
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186 | print_console(back); |
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187 | return TRUE; |
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188 | } |
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189 | |||
190 | /* Other 'normal' case. */ |
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191 | print_console(front); |
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192 | format_string[1] = conversion; |
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193 | sprintf(buffer, format_string, arg); |
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194 | print_console(buffer); |
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195 | print_console(back); |
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196 | |||
197 | return TRUE; |
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198 | } |
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2435 | jelen | 199 | |
200 | /** |
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201 | * } |
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202 | */ |
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203 |