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imap: Introduced imap_is_bchar() function 

Added imap_is_bchar() for testing if a given character is a valid bchar
or not.
This commit is contained in:
Jiri Hruska 2013-02-23 19:07:41 +01:00 committed by Steve Holme
parent b6f32464e9
commit 2f638a8f5e
1 changed files with 38 additions and 0 deletions
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38
lib/imap.c
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@ -1612,6 +1612,44 @@ static CURLcode imap_disconnect(struct connectdata *conn, bool dead_connection)
return CURLE_OK;
}
/***********************************************************************
*
* imap_is_bchar()
*
* Portable test of whether the specified char is a "bchar" as defined in the
* grammar of RFC-5092.
*/
static bool imap_is_bchar(char ch)
{
switch(ch) {
/* bchar */
case ':': case '@': case '/':
/* bchar -> achar */
case '&': case '=':
/* bchar -> achar -> uchar -> unreserved */
case '0': case '1': case '2': case '3': case '4': case '5': case '6':
case '7': case '8': case '9':
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
case 'V': case 'W': case 'X': case 'Y': case 'Z':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
case 'v': case 'w': case 'x': case 'y': case 'z':
case '-': case '.': case '_': case '~':
/* bchar -> achar -> uchar -> sub-delims-sh */
case '!': case '$': case '\'': case '(': case ')': case '*':
case '+': case ',':
/* bchar -> achar -> uchar -> pct-encoded */
case '%': /* HEXDIG chars are already included above */
return true;
default:
return false;
}
}
/***********************************************************************
*
* imap_parse_url_path()