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authorErik Andersen <andersen@codepoet.org>2000-02-08 19:58:47 +0000
committerErik Andersen <andersen@codepoet.org>2000-02-08 19:58:47 +0000
commite49d5ecbbe51718fa925b6890a735e5937cc2aa2 (patch)
treec90bda10731ad9333ce3b404f993354c9fc104b8 /coreutils/date.c
parentc0bf817bbc5c7867fbe8fb76d5c39f8ee802692f (diff)
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Some formatting updates (ran the code through indent)
-Erik
Diffstat (limited to 'coreutils/date.c')
-rw-r--r--coreutils/date.c451
1 files changed, 223 insertions, 228 deletions
diff --git a/coreutils/date.c b/coreutils/date.c
index a3528921d..b4c3e7153 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -1,3 +1,4 @@
1/* vi: set sw=4 ts=4: */
1/* 2/*
2 * Mini date implementation for busybox 3 * Mini date implementation for busybox
3 * 4 *
@@ -38,12 +39,13 @@
38 an RFC 822 complient date output for shell scripting 39 an RFC 822 complient date output for shell scripting
39 mail commands */ 40 mail commands */
40 41
41static const char date_usage[] = "date [OPTION]... [+FORMAT]\n" 42static const char date_usage[] = "date [OPTION]... [+FORMAT]\n"
42" or: date [OPTION] [MMDDhhmm[[CC]YY][.ss]]\n\n" 43 " or: date [OPTION] [MMDDhhmm[[CC]YY][.ss]]\n\n"
43"Display the current time in the given FORMAT, or set the system date.\n" 44 "Display the current time in the given FORMAT, or set the system date.\n"
44"\nOptions:\n\t-R\t\toutput RFC-822 compliant date string\n" 45 "\nOptions:\n\t-R\t\toutput RFC-822 compliant date string\n"
45"\t-s\t\tset time described by STRING\n" 46 "\t-s\t\tset time described by STRING\n"
46"\t-u\t\tprint or set Coordinated Universal Time\n"; 47
48 "\t-u\t\tprint or set Coordinated Universal Time\n";
47 49
48 50
49/* Input parsing code is always bulky - used heavy duty libc stuff as 51/* Input parsing code is always bulky - used heavy duty libc stuff as
@@ -51,240 +53,233 @@ static const char date_usage[] = "date [OPTION]... [+FORMAT]\n"
51 53
52/* Default input handling to save suprising some people */ 54/* Default input handling to save suprising some people */
53 55
54struct tm * 56struct tm *date_conv_time(struct tm *tm_time, const char *t_string)
55date_conv_time(struct tm *tm_time, const char *t_string) { 57{
56 int nr; 58 int nr;
57 59
58 nr = sscanf(t_string, "%2d%2d%2d%2d%d", 60 nr = sscanf(t_string, "%2d%2d%2d%2d%d",
59 &(tm_time->tm_mon), 61 &(tm_time->tm_mon),
60 &(tm_time->tm_mday), 62 &(tm_time->tm_mday),
61 &(tm_time->tm_hour), 63 &(tm_time->tm_hour),
62 &(tm_time->tm_min), 64 &(tm_time->tm_min), &(tm_time->tm_year));
63 &(tm_time->tm_year)); 65
64 66 if (nr < 4 || nr > 5) {
65 if(nr < 4 || nr > 5) { 67 fprintf(stderr, invalid_date, "date", t_string);
66 fprintf(stderr, invalid_date, "date", t_string); 68 exit(FALSE);
67 exit( FALSE); 69 }
68 } 70
69 71 /* correct for century - minor Y2K problem here? */
70 /* correct for century - minor Y2K problem here? */ 72 if (tm_time->tm_year >= 1900)
71 if(tm_time->tm_year >= 1900) 73 tm_time->tm_year -= 1900;
72 tm_time->tm_year -= 1900; 74 /* adjust date */
73 /* adjust date */ 75 tm_time->tm_mon -= 1;
74 tm_time->tm_mon -= 1; 76
75 77 return (tm_time);
76 return(tm_time);
77 78
78} 79}
79 80
80 81
81/* The new stuff for LRP */ 82/* The new stuff for LRP */
82 83
83struct tm * 84struct tm *date_conv_ftime(struct tm *tm_time, const char *t_string)
84date_conv_ftime(struct tm *tm_time, const char *t_string) { 85{
85 struct tm itm_time, jtm_time, ktm_time, \ 86 struct tm itm_time, jtm_time, ktm_time, ltm_time, mtm_time, ntm_time;
86 ltm_time, mtm_time, ntm_time; 87
87 88 itm_time = *tm_time;
88 itm_time = *tm_time; 89 jtm_time = *tm_time;
89 jtm_time = *tm_time; 90 ktm_time = *tm_time;
90 ktm_time = *tm_time; 91 ltm_time = *tm_time;
91 ltm_time = *tm_time; 92 mtm_time = *tm_time;
92 mtm_time = *tm_time; 93 ntm_time = *tm_time;
93 ntm_time = *tm_time; 94
94 95 /* Parse input and assign appropriately to tm_time */
95 /* Parse input and assign appropriately to tm_time */ 96
96 97 if (sscanf(t_string, "%d:%d:%d",
97 if(sscanf(t_string, "%d:%d:%d", 98 &itm_time.tm_hour, &itm_time.tm_min, &itm_time.tm_sec) == 3) {
98 &itm_time.tm_hour, 99
99 &itm_time.tm_min, 100 *tm_time = itm_time;
100 &itm_time.tm_sec) == 3 ) { 101 return (tm_time);
101 102
102 *tm_time = itm_time; 103 } else if (sscanf(t_string, "%d:%d",
103 return(tm_time); 104 &jtm_time.tm_hour, &jtm_time.tm_min) == 2) {
104 105
105 } else if (sscanf(t_string, "%d:%d", 106 *tm_time = jtm_time;
106 &jtm_time.tm_hour, 107 return (tm_time);
107 &jtm_time.tm_min) == 2) { 108
108 109 } else if (sscanf(t_string, "%d.%d-%d:%d:%d",
109 *tm_time = jtm_time; 110 &ktm_time.tm_mon,
110 return(tm_time); 111 &ktm_time.tm_mday,
111 112 &ktm_time.tm_hour,
112 } else if (sscanf(t_string, "%d.%d-%d:%d:%d", 113 &ktm_time.tm_min, &ktm_time.tm_sec) == 5) {
113 &ktm_time.tm_mon, 114
114 &ktm_time.tm_mday, 115 ktm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
115 &ktm_time.tm_hour, 116 *tm_time = ktm_time;
116 &ktm_time.tm_min, 117 return (tm_time);
117 &ktm_time.tm_sec) == 5) { 118
118 119 } else if (sscanf(t_string, "%d.%d-%d:%d",
119 ktm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ 120 &ltm_time.tm_mon,
120 *tm_time = ktm_time; 121 &ltm_time.tm_mday,
121 return(tm_time); 122 &ltm_time.tm_hour, &ltm_time.tm_min) == 4) {
122 123
123 } else if (sscanf(t_string, "%d.%d-%d:%d", 124 ltm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
124 &ltm_time.tm_mon, 125 *tm_time = ltm_time;
125 &ltm_time.tm_mday, 126 return (tm_time);
126 &ltm_time.tm_hour, 127
127 &ltm_time.tm_min) == 4) { 128 } else if (sscanf(t_string, "%d.%d.%d-%d:%d:%d",
128 129 &mtm_time.tm_year,
129 ltm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ 130 &mtm_time.tm_mon,
130 *tm_time = ltm_time; 131 &mtm_time.tm_mday,
131 return(tm_time); 132 &mtm_time.tm_hour,
132 133 &mtm_time.tm_min, &mtm_time.tm_sec) == 6) {
133 } else if (sscanf(t_string, "%d.%d.%d-%d:%d:%d", 134
134 &mtm_time.tm_year, 135 mtm_time.tm_year -= 1900; /* Adjust years */
135 &mtm_time.tm_mon, 136 mtm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
136 &mtm_time.tm_mday, 137 *tm_time = mtm_time;
137 &mtm_time.tm_hour, 138 return (tm_time);
138 &mtm_time.tm_min, 139
139 &mtm_time.tm_sec) == 6) { 140 } else if (sscanf(t_string, "%d.%d.%d-%d:%d",
140 141 &ntm_time.tm_year,
141 mtm_time.tm_year -= 1900; /* Adjust years */ 142 &ntm_time.tm_mon,
142 mtm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ 143 &ntm_time.tm_mday,
143 *tm_time = mtm_time; 144 &ntm_time.tm_hour, &ntm_time.tm_min) == 5) {
144 return(tm_time); 145 ntm_time.tm_year -= 1900; /* Adjust years */
145 146 ntm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */
146 } else if (sscanf(t_string, "%d.%d.%d-%d:%d", 147 *tm_time = ntm_time;
147 &ntm_time.tm_year, 148 return (tm_time);
148 &ntm_time.tm_mon, 149
149 &ntm_time.tm_mday, 150 }
150 &ntm_time.tm_hour, 151
151 &ntm_time.tm_min) == 5) { 152 fprintf(stderr, invalid_date, "date", t_string);
152 ntm_time.tm_year -= 1900; /* Adjust years */ 153
153 ntm_time.tm_mon -= 1; /* Adjust dates from 1-12 to 0-11 */ 154 exit(FALSE);
154 *tm_time = ntm_time;
155 return(tm_time);
156
157 }
158
159 fprintf(stderr, invalid_date, "date", t_string);
160
161 exit( FALSE);
162 155
163} 156}
164 157
165 158
166int 159int date_main(int argc, char **argv)
167date_main(int argc, char * * argv)
168{ 160{
169 char *date_str = NULL; 161 char *date_str = NULL;
170 char *date_fmt = NULL; 162 char *date_fmt = NULL;
171 char *t_buff; 163 char *t_buff;
172 int i; 164 int i;
173 int set_time = 0; 165 int set_time = 0;
174 int rfc822 = 0; 166 int rfc822 = 0;
175 int utc = 0; 167 int utc = 0;
176 int use_arg = 0; 168 int use_arg = 0;
177 time_t tm; 169 time_t tm;
178 struct tm tm_time; 170 struct tm tm_time;
179 171
180 /* Interpret command line args */ 172 /* Interpret command line args */
181 i = --argc; 173 i = --argc;
182 argv++; 174 argv++;
183 while (i > 0 && **argv) { 175 while (i > 0 && **argv) {
184 if (**argv == '-') { 176 if (**argv == '-') {
185 while (i>0 && *++(*argv)) switch (**argv) { 177 while (i > 0 && *++(*argv))
186 case 'R': 178 switch (**argv) {
187 rfc822 = 1; 179 case 'R':
188 break; 180 rfc822 = 1;
189 case 's': 181 break;
190 set_time = 1; 182 case 's':
191 if(date_str != NULL) usage ( date_usage); 183 set_time = 1;
192 date_str = optarg; 184 if (date_str != NULL)
193 break; 185 usage(date_usage);
194 case 'u': 186 date_str = optarg;
195 utc = 1; 187 break;
196 if (putenv ("TZ=UTC0") != 0) { 188 case 'u':
197 fprintf(stderr, memory_exhausted, "date"); 189 utc = 1;
198 exit( FALSE); 190 if (putenv("TZ=UTC0") != 0) {
191 fprintf(stderr, memory_exhausted, "date");
192 exit(FALSE);
193 }
194 /* Look ma, no break. Don't fix it either. */
195 case 'd':
196 use_arg = 1;
197 if (date_str != NULL)
198 usage(date_usage);
199 date_str = optarg;
200 break;
201 case '-':
202 usage(date_usage);
203 }
204 } else {
205 if ((date_fmt == NULL) && (strcmp(*argv, "+") == 0))
206 date_fmt = *argv;
207 else if (date_str == NULL) {
208 set_time = 1;
209 date_str = *argv;
210 } else {
211 usage(date_usage);
212 }
199 } 213 }
200 /* Look ma, no break. Don't fix it either. */ 214 i--;
201 case 'd': 215 argv++;
202 use_arg = 1;
203 if(date_str != NULL) usage ( date_usage);
204 date_str = optarg;
205 break;
206 case '-':
207 usage ( date_usage);
208 }
209 } else {
210 if ( (date_fmt == NULL) && (strcmp(*argv, "+")==0) )
211 date_fmt=*argv;
212 else if (date_str == NULL) {
213 set_time = 1;
214 date_str=*argv;
215 } else {
216 usage ( date_usage);
217 }
218 } 216 }
219 i--; 217
220 argv++; 218
221 } 219 /* Now we have parsed all the information except the date format
222 220 which depends on whether the clock is being set or read */
223 221
224 /* Now we have parsed all the information except the date format 222 time(&tm);
225 which depends on whether the clock is being set or read */ 223 memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
226 224 /* Zero out fields - take her back to midnight! */
227 time(&tm); 225 if (date_str != NULL) {
228 memcpy(&tm_time, localtime(&tm), sizeof(tm_time)); 226 tm_time.tm_sec = 0;
229 /* Zero out fields - take her back to midnight!*/ 227 tm_time.tm_min = 0;
230 if(date_str != NULL) { 228 tm_time.tm_hour = 0;
231 tm_time.tm_sec = 0; 229 }
232 tm_time.tm_min = 0; 230
233 tm_time.tm_hour = 0; 231 /* Process any date input to UNIX time since 1 Jan 1970 */
234 } 232 if (date_str != NULL) {
235 233
236 /* Process any date input to UNIX time since 1 Jan 1970 */ 234 if (strchr(date_str, ':') != NULL) {
237 if(date_str != NULL) { 235 date_conv_ftime(&tm_time, date_str);
238 236 } else {
239 if(strchr(date_str, ':') != NULL) { 237 date_conv_time(&tm_time, date_str);
240 date_conv_ftime(&tm_time, date_str); 238 }
241 } else { 239
242 date_conv_time(&tm_time, date_str); 240 /* Correct any day of week and day of year etc fields */
243 } 241 tm = mktime(&tm_time);
244 242 if (tm < 0) {
245 /* Correct any day of week and day of year etc fields */ 243 fprintf(stderr, invalid_date, "date", date_str);
246 tm = mktime(&tm_time); 244 exit(FALSE);
247 if (tm < 0 ) { 245 }
248 fprintf(stderr, invalid_date, "date", date_str); 246
249 exit( FALSE); 247 /* if setting time, set it */
250 } 248 if (set_time) {
251 249 if (stime(&tm) < 0) {
252 /* if setting time, set it */ 250 fprintf(stderr, "date: can't set date.\n");
253 if(set_time) { 251 exit(FALSE);
254 if( stime(&tm) < 0) { 252 }
255 fprintf(stderr, "date: can't set date.\n"); 253 }
256 exit( FALSE); 254 }
257 } 255
258 } 256 /* Display output */
259 } 257
260 258 /* Deal with format string */
261 /* Display output */ 259 if (date_fmt == NULL) {
262 260 date_fmt = (rfc822
263 /* Deal with format string */ 261 ? (utc
264 if(date_fmt == NULL) { 262 ? "%a, %_d %b %Y %H:%M:%S GMT"
265 date_fmt = (rfc822 263 : "%a, %_d %b %Y %H:%M:%S %z")
266 ? (utc 264 : "%a %b %e %H:%M:%S %Z %Y");
267 ? "%a, %_d %b %Y %H:%M:%S GMT" 265
268 : "%a, %_d %b %Y %H:%M:%S %z") 266 } else if (*date_fmt == '\0') {
269 : "%a %b %e %H:%M:%S %Z %Y"); 267 /* Imitate what GNU 'date' does with NO format string! */
270 268 printf("\n");
271 } else if ( *date_fmt == '\0' ) { 269 exit(TRUE);
272 /* Imitate what GNU 'date' does with NO format string! */ 270 }
273 printf ("\n"); 271
274 exit( TRUE); 272 /* Handle special conversions */
275 } 273
276 274 if (strncmp(date_fmt, "%f", 2) == 0) {
277 /* Handle special conversions */ 275 date_fmt = "%Y.%m.%d-%H:%M:%S";
278 276 }
279 if( strncmp( date_fmt, "%f", 2) == 0 ) { 277
280 date_fmt = "%Y.%m.%d-%H:%M:%S"; 278 /* Print OUTPUT (after ALL that!) */
281 } 279 t_buff = malloc(201);
282 280 strftime(t_buff, 200, date_fmt, &tm_time);
283 /* Print OUTPUT (after ALL that!) */ 281 printf("%s\n", t_buff);
284 t_buff = malloc(201); 282
285 strftime(t_buff, 200, date_fmt, &tm_time); 283 exit(TRUE);
286 printf("%s\n", t_buff);
287
288 exit( TRUE);
289 284
290} 285}
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