Function msGetFirstLine

mapstring.c:2081–2104

* msGetFirstLine() * * returns the first line of a given string. * called by getLabelSize functions for calculating * the baseline offsets of labels * * this function was implemented to avoid using the * msSplitString function and its multiple mallocs, as * only one malloc is used here. * * this function can be called if the input isn't a * multiline string, but this wastes a malloc

 * multiline string, but this wastes a malloc
 */
char* msGetFirstLine(char* text) {
    int firstLineLength=0; /*number of bytes up to first \n character */
    int glyphLength;
    char glyph[11];
    const char *textptr=text;
    char *firstLine,*firstLineCur;
    /*loop through glyphs in text*/
    while((glyphLength=msGetNextGlyph(&textptr,glyph))) {
        if(glyphLength==1 && *glyph=='\n') { /*we've hit the first \n char*/
            firstLineCur = firstLine = msSmallMalloc(firstLineLength+1);
            
            /*copy the first line into the return array*/
            while(firstLineLength--) {
                *firstLineCur++ = *text++;
            }
            *firstLineCur='\0';
            return firstLine;
        }
        /*increment byte count if we haven't hit a \n yet*/
        firstLineLength+=glyphLength;
    }
    /*no newline found in text*/
    return msStrdup(text);
}

/************************************************************************/
/*                             msStrdup()                               */