boot3/Make/ConvertLineEndings

#if 0

# ---------- START OF MPW SHELL SCRIPT ----------

# Get the root to work on.

Set ToolPath "{0}Tool"
Set Repo "`Files -f "{0}" | StreamEdit -e '1 Replace /[<5B>:]*:[<5B>:]*<2A>/ -n'`"
Set ObjFile "{TempFolder}ConvertLineEndingsTool.o"


# Make sure the fast C newline-replacer is available!


If "`Exists "{ToolPath}"`" == ""
	SC -w off -o "{ObjFile}" "{0}"
	ILink -d -t MPST -c 'MPS ' -o "{ToolPath}" "{Libraries}Stubs.o" "{CLibraries}StdCLib.o" "{Libraries}MacRuntime.o" "{Libraries}IntEnv.o" "{Libraries}Interface.o" "{ObjFile}"
End


# Run it!

Echo "# Suggested command to convert TEXT file line-endings:"
Echo "{ToolPath} <20><>"

Files -f -r -o -s -t TEXT "{Repo}" | StreamEdit -e '1,<2C> Change "    " . " <20><>"'
Echo "    Dev:Null"

Exit

# ---------- END OF MPW SHELL SCRIPT ----------

#endif

// ---------- START OF C PROGRAM ----------

#include <stdio.h>

int main(int argc, char **argv)
{
	long buflen = 0x1000000;
	char *buf;
	FILE *f;
	int i;
	int first_i = 1;
	size_t didread;
	char fromc = 10;
	char toc = 13;
	int didctr = 0, didntctr = 0;
	
	if(argc < 2)
	{
		printf("# USAGE: %s [-unix] FILE ...\n", argv[0]);
		return 1;
	}
	
	if(!strcmp(argv[first_i], "-unix"))
	{
		fromc = 13;
		toc = 10;
		first_i++;
	}
	
	// Get the largest possible buffer
	buf = (char *)malloc(buflen);
	while(buflen && !buf)
	{
		buflen >>= 1;
		buf = (char *)malloc(buflen);
	}
	
	if(!buf) return 1;
	
	//printf("# %db buffer\n", buflen);
	
	for(i=first_i; i<argc; i++)
	{
		int fif = 0;
		
		if(!strcmp(argv[i], "Dev:Null")) continue;
		
		f = fopen(argv[i], "r+");
		if(!f) return 1;
		
		do
		{
			long j;
			int fib = 0;
			
			didread = fread(buf, 1, buflen, f);
			
			for(j=0; j<didread; j++)
			{
				if(buf[j] == fromc)
				{
					buf[j] = toc;
					fib = 1;
				}
			}
			
			if(fib)
			{
				fseek(f, -didread, SEEK_CUR);
				fwrite(buf, 1, didread, f);
				fseek(f, 0, SEEK_CUR);				/* not sure why it needs this to work */
				fif = 1;
			}			
		} while(didread == buflen);
		
		fclose(f);
		
		if(fif)
		{
			if(toc == 10)
				printf("# >X ");
			else
				printf("# X> ");
			didctr ++;
		}
		else
		{
			printf("# --- ");
			didntctr++;
		}
		
		printf("%s\n", argv[i]);
	}
	
	printf("# Files changed: %d. Files unchanged: %d.\n", didctr, didntctr);
	
	return 0;
}

// ---------- END OF C PROGRAM ----------