diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arg.h | 41 | ||||
| -rw-r--r-- | src/blackbody.c | 2 | ||||
| -rw-r--r-- | src/blackbody.h | 2 | ||||
| -rw-r--r-- | src/radharc.c | 6 | ||||
| -rw-r--r-- | src/settings.c | 246 | ||||
| -rw-r--r-- | src/settings.h | 146 |
6 files changed, 441 insertions, 2 deletions
diff --git a/src/arg.h b/src/arg.h new file mode 100644 index 0000000..8d235ba --- /dev/null +++ b/src/arg.h @@ -0,0 +1,41 @@ +/* + * Copy me if you can. + * by 20h + */ + +#ifndef ARG_H__ +#define ARG_H__ + +extern char *argv0; + +/* use main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ + argv[0] && argv[0][1]\ + && argv[0][0] == '-';\ + argc--, argv++) {\ + char argc_;\ + char **argv_;\ + int brk_;\ + if (argv[0][1] == '-' && argv[0][2] == '\0') {\ + argv++;\ + argc--;\ + break;\ + }\ + for (brk_ = 0, argv[0]++, argv_ = argv;\ + argv[0][0] && !brk_;\ + argv[0]++) {\ + if (argv_ != argv)\ + break;\ + argc_ = argv[0][0];\ + switch (argc_) + +#define ARGEND }\ + } + +#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ + (char *)0 :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + +#endif diff --git a/src/blackbody.c b/src/blackbody.c index 1e06fb9..2fb5df4 100644 --- a/src/blackbody.c +++ b/src/blackbody.c @@ -114,7 +114,7 @@ interpolate(double x1, double y1, double x2, double y2, double temp, double *r, * @throws EDOM The selected temperature is below 1000 K. */ int -get_colour(int fd, int temp, double *r, double *g, double *b) +get_colour(int fd, long int temp, double *r, double *g, double *b) { double values[10]; /* low:x,y,r,g,b + high:x,y,r,g,b */ off_t offset; diff --git a/src/blackbody.h b/src/blackbody.h index b83f641..4351505 100644 --- a/src/blackbody.h +++ b/src/blackbody.h @@ -35,5 +35,5 @@ * @throws 0 The file did not have the expected size. * @throws EDOM The selected temperature is below 1000 K. */ -int get_colour(int fd, int temp, double *r, double *g, double *b); +int get_colour(int fd, long int temp, double *r, double *g, double *b); diff --git a/src/radharc.c b/src/radharc.c index 5d83e1e..7b5f1e5 100644 --- a/src/radharc.c +++ b/src/radharc.c @@ -19,11 +19,17 @@ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ +#include "settings.h" + int main(int argc, char *argv[]) { + struct settings settings; + + parse_command_line(argc, argv, &settings); + return 0; } diff --git a/src/settings.c b/src/settings.c new file mode 100644 index 0000000..1eba1cc --- /dev/null +++ b/src/settings.c @@ -0,0 +1,246 @@ +/** + * Copyright © 2016 Mattias Andrée <maandree@member.fsf.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include "settings.h" +#include "arg.h" +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <ctype.h> +#include <errno.h> +#include <math.h> +#include <limits.h> + + + +/** + * The name of the process. + */ +char *argv0 = NULL; + + + +/** + * Print usage information and exit if a condition is met. + * + * @param condition Do no do anything iff this is zero. + */ +static void +usage(int condition) +{ + if (condition) { + fprintf(stderr, + "Usage: %s [OPTIONS]...\n" + "See `man 1 radharc` for more information.\n", + !argv0 ? "radharc" : argv0); + exit(2); + } +} + + +/** + * Parse a temperature string. + * + * @param str The temperature string. + * @param temp Output parameter for the temperature. + * Overflow is truncated. + * @param direction Unless `NULL`, will be set to +1 if `str` + * starts with a '+', `-1` if `str` starts + * with a '-', 0 otherwise. If `NULL` and + * `str` starts with a '-' or a '+', the + * function will fail. + * @param lower The function shall fail if the evaluated + * temperature is below this. + * @return 0 on success, -1 on error. + */ +static int +parse_temperature(const char *str, long int *temp, int *direction, int lower) +{ + int dir = 0; + char *end; + switch (*str) { + case '-': dir = -1; break; + case '+': dir = +1; break; + } + str += !!dir; + if (dir && !direction) return -1; + else if (dir) *direction = dir; + if (!isdigit(*str)) return -1; + *temp = (errno = 0, strtol)(str, &end, 10); + if ((errno && !((errno == ERANGE) && (*temp == LONG_MAX))) || *end || (*temp < lower)) + return -1; + return 0; +} + + +/** + * Parse a string as a positively valued `struct timespec`. + * + * @param str The string. + * @param ts Output parameter for the value. + * @return 0 on success, -1 on error. + */ +static int +parse_timespec(const char *str, struct timespec *ts) +{ + int points = 0; + memset(ts, 0, sizeof(*ts)); + + /* Parse seconds. */ + if (!isdigit(*str)) + return -1; + while (isdigit(*str)) { + ts->tv_sec *= 10; + ts->tv_sec += *str++ & 15; + } + + /* End? */ + if (!*str) return 0; + if (*str != '.') return -1; + + /* Parse nanoseconds.*/ + for (; (points++ < 9) && isdigit(*str); str++) { + ts->tv_nsec *= 10; + ts->tv_nsec += *str++ & 15; + } + if (points == 9) { + if (!isdigit(*str)) return -1; + if (*str++ >= '5') { + ts->tv_nsec += 1; + if (ts->tv_nsec == 1000000000L) + ts->tv_sec += 1, ts->tv_nsec = 0; + } + } + while (isdigit(*str)) str++; + if (*str) return -1; + + /* End! */ + return 0; +} + + +/** + * Parse a latitude or a longitude value. + * + * @param str The string. + * @param loc Output parameter for the value. + * @param limit The limit of the absolute value. + * @return 0 on success, -1 on error. + */ +static int +parse_location(char *str, double *loc, double limit) +{ + char* end; + if (strstr(str, "−") == str) /* Support proper minus. */ + *(str += strlen("−") - 1) = '-'; + if ((*str != '-') && (*str != '+') && (*str != '.') && !isdigit(*str)) + return -1; + *loc = (errno = 0, strtod)(str, &end); + return -(errno || *loc || (fabs(*loc) > limit)); +} + + +/** + * Parse the command line. + * + * @param argc The number of elements in `argv`. + * @param argv The commnad line arguments including the zeroth elemenet. + * @param settings Output parameter for the settings. + */ +void +parse_command_line(int argc, char *argv[], struct settings *settings) +{ + int location_set = 0; + char *p; + char *arg; + int c = 0; + + memset(settings, 0, sizeof(*settings)); + settings->natural_temp = 6500; + settings->day_temp = 5500; + settings->night_temp = 3500; + settings->trans_speed = 50; + + ARGBEGIN { + case 'l': + usage(!(p = strchr(arg = ARGF(), ':'))); + *p++ = '\0', location_set = 1; + usage(parse_location(arg, &(settings->latitude), 90.0)); + usage(parse_location(arg, &(settings->longitude), 180.0)); + break; + case 't': + settings->temp = settings->day_temp = settings->night_temp = 0; + settings->temp_direction = 0; + if ((p = strchr(arg = ARGF(), ':'))) { + *p++ = '\0'; + usage(parse_temperature(arg, &(settings->day_temp), NULL, 1000)); + usage(parse_temperature(p, &(settings->night_temp), NULL, 1000)); + } else { + usage(parse_temperature(arg, &(settings->temp), &(settings->temp_direction), 1000)); + } + break; + case 'T': + usage(parse_temperature(ARGF(), &(settings->natural_temp), NULL, 1000)); + break; + case 's': + settings->trans_speed = 0; + usage(parse_timespec(ARGF(), &(settings->transition))); + break; + case 'S': + usage(parse_temperature(ARGF(), &(settings->trans_speed), NULL, 1)); + break; + case 'h': + usage(!(settings->hookpath = ARGF())); + break; + case 'd': c++; /* Fall though. */ + case 'e': c++; /* Fall though. */ + case 'm': c++; +#define REALLOC(VAR, N) !(VAR = realloc(VAR, (N) * sizeof(*VAR))) + settings->monitors_n++; + if (REALLOC(settings->monitors_id, settings->monitors_n)) goto fail; + if (REALLOC(settings->monitors_arg, settings->monitors_n)) goto fail; + settings->monitors_id[settings->monitors_n - 1] = ARGF(); + settings->monitors_arg[settings->monitors_n - 1] = (c == 3 ? 'm' : c == 2 ? 'e' : 'd'), c = 0; + break; + case 'p': settings->print_status = 1; break; + case 'n': settings->panic_start = 1; break; + case 'N': settings->panic_else = 1; break; + case 'o': settings->set_and_exit = 1; break; + case 'x': settings->ignore_calib = 1; break; + case 'i': settings->negative = 1; break; + case 'b': settings->use_bus = 1; break; + default: usage(1); break; + } ARGEND; + usage(argc); + + if (!location_set && !(settings->temp)) { + fprintf(stderr, + "%s: The -l option is mandatory, unless single value -t is used." + "See `man 1 radharc` for more information.\n", + !argv0 ? "radharc" : argv0); + exit(2); + } + +fail: + perror(argv0 ? argv0 : "radharc"); + exit(1); +} + diff --git a/src/settings.h b/src/settings.h new file mode 100644 index 0000000..b1909bb --- /dev/null +++ b/src/settings.h @@ -0,0 +1,146 @@ +/** + * Copyright © 2016 Mattias Andrée <maandree@member.fsf.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +#include <time.h> + + + +/** + * Settings from the command line. + */ +struct settings { + /** + * Print current status and exit? + */ + int print_status : 1; + + /** + * Start without transition? + */ + int panic_start : 1; + + /** + * Never transition, apart from at start? + */ + int panic_else : 1; + + /** + * Set temperature, possibly with transition, and exit? + */ + int set_and_exit : 1; + + /** + * Ignore calibrations? + */ + int ignore_calib : 1; + + /** + * Apply negative image filter? + */ + int negative : 1; + + /** + * Broadcast event with bus? + */ + int use_bus : 1; + + /** + * -1 to decrease temperature, + * +1 to increase temperature, + * 0 to set temperature. + */ + int temp_direction; + + /** + * The temperature, if use, the program will exit when it is done. + */ + long int temp; + + /** + * The temperature at full daytime. + */ + long int day_temp; + + /** + * The temperature at full night. + */ + long int night_temp; + + /** + * The temperature when disabled. + */ + long int natural_temp; + + /** + * Pathname to the hook script. + */ + char *hookpath; + + /** + * The number of seconds the transition takes. + */ + struct timespec transition; + + /** + * The number of kelvins per seconds the + * temperature is adjusted during transition. + */ + long int trans_speed; + + /** + * The user's latitudinal position. + */ + double latitude; + + /** + * The user's longitudinal position. + */ + double longitude; + + /** + * The number of elements in `monitors_id` and in `monitors_arg`. + */ + size_t monitors_n; + + /** + * Values for -d, -e, and -m, in order. + */ + char **monitors_id; + + /** + * The option (the character after the dash) + * the option used in correspnding element + * in `monitors_id`. + */ + char *monitors_arg; +}; + + + +/** + * Parse the command line. + * + * @param argc The number of elements in `argv`. + * @param argv The commnad line arguments including the zeroth elemenet. + * @param settings Output parameter for the settings. + */ +void parse_command_line(int argc, char *argv[], struct settings *settings); + |