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#include "handle.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
int error(char* message) {
fprintf(stderr, "%s: %s\n", "ttyvideo", message);
return 1;
}
static int numOptionsSpecified = 0;
static int numUniqueOptionsSpecified = 0;
static char** argumentCallMap = NULL;
static char** argumentMemStore = NULL;
static int* argumentNumStore = NULL;
static char** helpMessages = NULL;
static char* defaultArg = NULL;
static char* defaultArgHelp = NULL;
#define MAX_ARG_SIZE 200
char* setDefaultArgument(char* helpText) {
defaultArg = (char*)malloc(sizeof(char) * MAX_ARG_SIZE);
defaultArgHelp = (char*)malloc(sizeof(char) * strlen(helpText));
strcpy(defaultArgHelp, helpText);
defaultArg[0] = '\0';
return defaultArg;
}
#define MAX_ACCESS_MAP_SIZE 100
#define MAX_HELP_MESSAGE_ARRAY_SIZE 100
char* addArgument(char* helpText, int numArguments, char* firstCall, char* secondCall) {
if(firstCall == NULL) {
fprintf(stderr, "No option specified for parameter\n");
return NULL;
}
if(firstCall[0] != '-') {
fprintf(stderr, "Option '%s' does not start with a '-'\n", firstCall);
return NULL;
}
if(secondCall != NULL && secondCall[0] != '-') {
fprintf(stderr, "Option '%s' does not start with a '-'\n", secondCall);
}
if(argumentCallMap == NULL) {
argumentCallMap = (char**)malloc(sizeof(char*) * MAX_ACCESS_MAP_SIZE);
}
if(argumentMemStore == NULL) {
argumentMemStore = (char**)malloc(sizeof(char*) * MAX_ACCESS_MAP_SIZE);
}
if(argumentNumStore == NULL) {
argumentNumStore = (int*)malloc(sizeof(int*) * MAX_ACCESS_MAP_SIZE);
}
if(helpMessages == NULL) {
helpMessages = (char**)malloc(sizeof(char*) * MAX_HELP_MESSAGE_ARRAY_SIZE);
}
// TODO: Add ability to allocate lots of these
char* argumentMemLocation = (char*)malloc(sizeof(char) * MAX_ARG_SIZE);
if(argumentMemLocation == NULL) {
fprintf(stderr, "Couldn't allocate memory to store argument to pass to %s", firstCall);
return NULL;
}
argumentMemLocation[0] = '\0';
int argumentAccessLocation = numOptionsSpecified++;
argumentCallMap[argumentAccessLocation] = (char*)malloc(sizeof(char) * strlen(firstCall));
strcpy(argumentCallMap[argumentAccessLocation], firstCall);
argumentMemStore[argumentAccessLocation] = argumentMemLocation;
argumentNumStore[argumentAccessLocation] = numArguments;
if(secondCall == NULL) {
helpMessages[numUniqueOptionsSpecified] = (char*)malloc(sizeof(char) * (strlen(helpText) + strlen(firstCall) + 4));
strcpy(helpMessages[numUniqueOptionsSpecified], firstCall);
strcat(helpMessages[numUniqueOptionsSpecified], ":\t");
strcat(helpMessages[numUniqueOptionsSpecified], helpText);
numUniqueOptionsSpecified++;
return argumentMemLocation;
}
helpMessages[numUniqueOptionsSpecified] = (char*)malloc(sizeof(char) * (strlen(helpText) + strlen(firstCall) + 2 + 4 + strlen(secondCall)));
strcpy(helpMessages[numUniqueOptionsSpecified], firstCall);
strcat(helpMessages[numUniqueOptionsSpecified], ", ");
strcat(helpMessages[numUniqueOptionsSpecified], secondCall);
strcat(helpMessages[numUniqueOptionsSpecified], ":\t");
strcat(helpMessages[numUniqueOptionsSpecified], helpText);
numUniqueOptionsSpecified++;
argumentAccessLocation = numOptionsSpecified++;
argumentCallMap[argumentAccessLocation] = (char*)malloc(sizeof(char) * strlen(secondCall));
strcpy(argumentCallMap[argumentAccessLocation], secondCall);
argumentMemStore[argumentAccessLocation] = argumentMemLocation;
argumentNumStore[argumentAccessLocation] = numArguments;
return argumentMemLocation;
}
void printUsage() {
if(helpMessages != NULL) {
register int i;
for(i = 0; i < numUniqueOptionsSpecified; ++i) {
printf("%s\n", helpMessages[i]);
}
} else {
printf("No options to display\n");
}
}
int handle(int argc, char** argv) {
register int i, j;
int numArguments;
for(i = 1; i < argc; ++i) {
for(j = 0; j < numOptionsSpecified; ++j) {
if(argv[i][0] != '-') {
if(defaultArg == NULL) {
fprintf(stderr, "Argument '%s' was passed without an option, and no default argument has been set\n", argv[0]);
return 1;
}
if(defaultArg[0] != '\0') {
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
return 1;
}
strcpy(defaultArg, argv[i]);
break;
}
if(strcmp(argv[i], argumentCallMap[j]))
continue;
numArguments = argumentNumStore[j];
if(numArguments) {
if(i < argc - 1 && argv[i+1][0] != '-') {
strcpy(argumentMemStore[j], argv[++i]);
} else {
fprintf(stderr, "Option '%s' requires an argument\n", argv[i]);
return 1;
}
}
else
strcpy(argumentMemStore[j], "1"); // The option is present
break;
}
if(j == numOptionsSpecified) {
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
return 1;
}
}
return 0;
}
void sig_handler(int signo) {
if(signo == SIGINT)
terminate = 1;
}
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