Fixed lower/upper case functions to use locale.

https://github.com/mpapierski/ftpproxy/commit/f606f57b47b3f286ea1ba5b50728d6f3cb9a313d

Author: Michaе┌ Papierski <michal@papierski.net>

Date:   Sat Aug 23 13:38:44 2014 +0200

Previous version hardcoded some letters from alphabet and added its

own (most probably German special characters). This is better

because locale is used for the conversion.

--- src/lib.c

+++ src/lib.c

@@ -59,122 +59,33 @@ void *reallocate(void *p, size_t size)

 	return (p);

 }

-

-

-static unsigned int lower[256], upper[256];

-

-static int _init_upper()

-{

-	unsigned int c;

-	

-	DEBUG( fprintf (stderr, "init upper[]\n"); )

-	for (c = 0; c < 256; c++)

-		upper[c] = c;

-

-	DEBUG( fprintf (stderr, "init uppercase letters\n"); )

-	for (c = 'a'; c < 'z'+1; c++)

-		upper[c] = 'A' + (c - 'a');

-

-	DEBUG( fprintf (stderr, "init umlaute\n"); )

-	upper[c = (unsigned char) 'Д'] = 'д';

-	upper[c = (unsigned char) 'Ж'] = 'ж';

-	upper[c = (unsigned char) 'Э'] = 'э';

-

-	DEBUG( fprintf (stderr, "init upper[] complete\n"); )

-	return (0);

-}

-

-static int _init_lower()

-{

-	unsigned int c;

-	

-	DEBUG( fprintf (stderr, "init lower[]\n"); )

-	for (c = 0; c < 256; c++)

-		lower[c] = c;

-

-	DEBUG( fprintf (stderr, "init uppercase letters\n"); )

-	for (c = 'A'; c < 'Z'+1; c++)

-		lower[c] = 'a' + (c - 'A');

-

-	DEBUG( fprintf (stderr, "init umlaute\n"); )

-	lower[c = (unsigned char) 'д'] = 'Д';

-	lower[c = (unsigned char) 'ж'] = 'Ж';

-	lower[c = (unsigned char) 'э'] = 'Э';

-

-	DEBUG( fprintf (stderr, "init upper[] complete\n"); )

-	return (0);

-}

-

-

-unsigned int uppercase(unsigned int c)

-{

-	if (upper['0'] == 0)

-		_init_upper();

-

-	return (upper[c]);

-}

-

-int isuppercase(unsigned int c)

-{

-	if (upper['0'] == 0)

-		_init_upper();

-

-	return (upper[c] == c);

-}

-

-unsigned int lowercase(unsigned int c)

-{

-	if (lower['0'] == 0)

-		_init_lower();

-

-	return (lower[c]);

-}

-

-int islowercase(unsigned int c)

-{

-	if (lower['0'] == 0)

-		_init_lower();

-

-	return (lower[c] == c);

-}

-

 char *strlwr(char *string)

 {

-	unsigned int c;

-	unsigned char *p;

+	int c;

-	if (lower['0'] == 0)

-		_init_lower();

-		

-	p = string;

-	while ((c = *p) != 0) {

-		*p++ = lower[c];

+	while ((c = *string) != 0) {

+		*string++ = tolower(c);

 		}

 	return (string);

-}	

+}

 char *strupr(char *string)

 {

-	unsigned int c;

-	unsigned char *p;

+	int c;

-	if (upper['0'] == 0)

-		_init_upper();

-		

-	p = string;

-	while ((c = *p) != 0) {

-		*p++ = upper[c];

+	while ((c = *string) != 0) {

+		*string++ = toupper(c);

 		}

 	return (string);

-}	

+}

 char *skip_ws(char *string)

 {

-	unsigned int c;

+	int c;

-	while ((c = *string) == ' '  ||  c == '\t')

+	while (isspace(c = *string))

 		string++;

 	return (string);

@@ -185,6 +95,7 @@ char *noctrl(char *buffer)

 	int	len, i;

 	unsigned char *p;

+	// TODO: Use iscntrl here. iscntrl(32) returns 0 so figure out why space is converted to null byte too.

 	if ((p = buffer) == NULL)

 		return (NULL);

--- src/lib.h

+++ src/lib.h

@@ -32,10 +32,6 @@ extern int verbose;

 void *allocate(size_t size);

 void *reallocate(void *p, size_t size);

-unsigned int uppercase(unsigned int c);

-int isuppercase(unsigned int c);

-unsigned int lowercase(unsigned int c);

-int islowercase(unsigned int c);

 char *strlwr(char *string);

 char *strupr(char *string);

 char *skip_ws(char *string);