ruby indent

rubyindent.cpp

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
char uppre[10][10] = {"module","class","def","if","else","unless","for","when","case","do"};
const int UP_MAX = 10;
char downpre[3][10] = {"end","else","when"};
const int DOWN_MAX = 3 ;
bool isdown(char *str) 
{
	if((str[0] == '#') or (str[1] == '#')) return false;
	if((str[0] == '\n') or (str[1] == '\n')) return false;
	char get[100];
	sscanf(str,"%s",get);
	for(int lx = 0;lx < DOWN_MAX;lx++)
	{
		if(strcmp(get,downpre[lx]) == 0)
			return true;
	}
	int sl = strlen(str);
	if(sl > 4)
	{
		if((str[sl - 4] == 'e') and (str[sl - 3] == 'n') and (str[sl - 2] == 'd'))
			return true;
	}
	return false;

}
bool isup(char *str)
{
	if((str[0] == '#') or (str[1] == '#')) return false;
	if((str[0] == '\n') or (str[1] == '\n')) return false;
	char get[100];
	sscanf(str,"%s",get);
	for(int lx = 0;lx < UP_MAX;lx++)
	{
		if(strcmp(get,uppre[lx]) == 0)
			return true;
	}
	char *tokptr;
	tokptr = strtok(str," \t");
	while(tokptr != NULL)
	{
		//printf("get token: [%s]\n",tokptr);
		for(int lx = 0;lx < UP_MAX;lx++)
			if(strcmp(tokptr,uppre[lx]) == 0)
				return true;
		tokptr = strtok(NULL," \t");
	}	
	return false;
}
int main(int argc,char* argv[])
{
	int level = 0;
	if(argc < 3) 
	{
		printf("Parameter isn't enough.\n");
		exit(1);
	}
	FILE *fin = fopen(argv[1],"r");
	FILE *fout = fopen(argv[2],"w");
	char string[200];
	int linecnt = 0;
	if(fin == NULL)
	{
		printf("Read Null file?\n");
		exit(1);
	}
	while(fgets(string,100,fin) != NULL)
	{
		linecnt++;
		//printf("%s",string);
		if(isdown(string)) 
		{
			//puts("[[ DOWN");
			level -= 1;
			if(level < 0) 
			{
				printf("Line %04d Warning: Indent Error.\n",linecnt);
				level = 0;
			}
		}
		for(int lx = 0;lx < level;lx++)
			fprintf(fout,"\t");
		fprintf(fout,"%s",string);
		if(isup(string)) 
		{
			//puts("[[ UP");
			level += 1;
		}
	}
	fclose(fin);
	fclose(fout);
	return 0;

}

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