leiless · November 23, 2018 09:39 · leiless · Nov 23, 2018
diff --git a/is_u8path_valid.c b/is_u8path_valid.c
 #include <assert.h>

 /**
 * Check if a given UTF8-encoded path is valid
 * @return      empty string yield false
 * see:
 *  https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file#naming-conventions
 *  https://github.com/apache/commons-lang/blob/master/src/main/java/org/apache/commons/lang3/CharUtils.java#L438
 */
 static inline bool is_u8path_valid(const register char * __nonnull p)
 {
    static bool bad_chars[1<<8] = {
        [0x00] = 1, [0x01] = 1, [0x02] = 1, [0x03] = 1, [0x04] = 1, [0x05] = 1, [0x06] = 1, [0x07] = 1,
        [0x08] = 1, [0x09] = 1, [0x0a] = 1, [0x0b] = 1, [0x0c] = 1, [0x0d] = 1, [0x0e] = 1, [0x0f] = 1,
        [0x10] = 1, [0x11] = 1, [0x12] = 1, [0x13] = 1, [0x14] = 1, [0x15] = 1, [0x16] = 1, [0x17] = 1,
        [0x18] = 1, [0x19] = 1, [0x1a] = 1, [0x1b] = 1, [0x1c] = 1, [0x1d] = 1, [0x1e] = 1, [0x1f] = 1,
        [0x7f] = 1, ['<']  = 1, ['>']  = 1, [':']  = 1, ['"']  = 1, ['\\'] = 1, ['|']  = 1, ['?']  = 1,
        ['*']  = 1,
    };

    assert(p != NULL);

    do {
        if (bad_chars[(unsigned char) *p])
            return false;
    } while (*(++p) != '\0');

    return true;
 }
	#include <assert.h>

	/**
	* Check if a given UTF8-encoded path is valid
	* @return empty string yield false
	* see:
	* https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file#naming-conventions
	* https://github.com/apache/commons-lang/blob/master/src/main/java/org/apache/commons/lang3/CharUtils.java#L438
	*/
	static inline bool is_u8path_valid(const register char * __nonnull p)
	{
	static bool bad_chars[1<<8] = {
	[0x00] = 1, [0x01] = 1, [0x02] = 1, [0x03] = 1, [0x04] = 1, [0x05] = 1, [0x06] = 1, [0x07] = 1,
	[0x08] = 1, [0x09] = 1, [0x0a] = 1, [0x0b] = 1, [0x0c] = 1, [0x0d] = 1, [0x0e] = 1, [0x0f] = 1,
	[0x10] = 1, [0x11] = 1, [0x12] = 1, [0x13] = 1, [0x14] = 1, [0x15] = 1, [0x16] = 1, [0x17] = 1,
	[0x18] = 1, [0x19] = 1, [0x1a] = 1, [0x1b] = 1, [0x1c] = 1, [0x1d] = 1, [0x1e] = 1, [0x1f] = 1,
	[0x7f] = 1, ['<'] = 1, ['>'] = 1, [':'] = 1, ['"'] = 1, ['\\'] = 1, ['\|'] = 1, ['?'] = 1,
	['*'] = 1,
	};

	assert(p != NULL);

	do {
	if (bad_chars[(unsigned char) *p])
	return false;
	} while (*(++p) != '\0');

	return true;
	}