104 lines
2.2 KiB
C
104 lines
2.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "emotion.h"
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#include "journal.h"
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#define TOPICS 10
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// go through all elements of argv[2] and beyond
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// and join them together in a string
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char *extract_handler_msg(int argc, char **argv)
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{
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int cur = 0;
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// allocate an empty slot to start with.
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char *res = malloc(cur);
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// iterate through each argument
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for(int i = 2; argv[i] != NULL; i++)
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{
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// catch it, get its length
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char *word = argv[i];
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int wordlen = strlen(word);
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// increase the size of our current things by
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// arg length + 1 (for a whitespace)
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cur += wordlen;
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res = realloc(res, cur + 1);
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// only prepend our whitespace if we AREN'T
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// at the first argument.
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if(i != 2)
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{
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res[cur - wordlen] = ' ';
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cur++;
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}
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// merge our current results with the current arg
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for(int j = 0; j < wordlen; j++)
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{
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res[cur - wordlen + j] = word[j];
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}
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}
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return res;
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}
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int main(int argc, char** argv)
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{
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if(argc < 2)
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{
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printf("usage: %s topic message\n", argv[0]);
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return 0;
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}
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char *topic = argv[1];
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const char* topics[TOPICS] = {
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"emotion"
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};
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void (*handlers[])(FILE*, char*) = {
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handle_emotion,
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};
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if(strcmp(topic, "list") == 0)
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{
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// list all topics
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for(int i = 0; topics[i] != NULL; i++)
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printf("%s ", topics[i]);
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printf("\n");
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return 0;
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}
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for(int i = 0; topics[i] != NULL; i++)
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{
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const char* cur_topic = topics[i];
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if(strcmp(topic, cur_topic) == 0)
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{
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void (*fun_ptr)(FILE*, char*) = handlers[i];
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FILE* journal_file = journal_open(topic);
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char *handler_message = extract_handler_msg(argc, argv);
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printf("'%s'\n", handler_message);
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// the joined args[2] and beyond come as the
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// second argument
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fun_ptr(journal_file, handler_message);
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journal_close(journal_file);
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free(handler_message);
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printf("done\n");
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return 0;
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}
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}
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printf("topic %s not found\n", topic);
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return 0;
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}
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