unsigned int
sp_svg_length_read_lff (const gchar *str, unsigned long *unit, float *val, float *computed)
{
const gchar *e;
float v;
if (!str) return 0;
v = strtod (str, (char **) &e);
if (e == str) return 0;
if (!e[0]) {
/* Unitless */
if (unit) *unit = SP_SVG_UNIT_NONE;
if (val) *val = v;
if (computed) *computed = v;
return 1;
} else if (!isalnum (e[0])) {
/* Unitless or percent */
if (e[0] == '%') {
/* Percent */
if (e[1] && isalnum (e[1])) return 0;
if (unit) *unit = SP_SVG_UNIT_PERCENT;
if (val) *val = v * 0.01;
return 1;
} else {
if (unit) *unit = SP_SVG_UNIT_NONE;
if (val) *val = v;
if (computed) *computed = v;
return 1;
}
} else if (e[1] && !isalnum (e[2])) {
unsigned int uval;
/* Units */
uval = UVAL (e[0], e[1]);
switch (uval) {
case UVAL('p','x'):
if (unit) *unit = SP_SVG_UNIT_PX;
if (computed) *computed = v * 1.0;
break;
case UVAL('p','t'):
if (unit) *unit = SP_SVG_UNIT_PT;
if (computed) *computed = v * 1.25;
break;
case UVAL('p','c'):
if (unit) *unit = SP_SVG_UNIT_PC;
if (computed) *computed = v * 15.0;
break;
case UVAL('m','m'):
if (unit) *unit = SP_SVG_UNIT_MM;
if (computed) *computed = v * 3.543307;
break;
case UVAL('c','m'):
if (unit) *unit = SP_SVG_UNIT_CM;
if (computed) *computed = v * 35.43307;
break;
case UVAL('i','n'):
if (unit) *unit = SP_SVG_UNIT_IN;
if (computed) *computed = v * 90.0;
break;
case UVAL('e','m'):
if (unit) *unit = SP_SVG_UNIT_EM;
break;
case UVAL('e','x'):
if (unit) *unit = SP_SVG_UNIT_EX;
break;
default:
/* Invalid */
return 0;
break;
}
if (val) *val = v;
return 1;
}
/* Invalid */
return 0;
}
static unsigned sp_svg_length_read_lff(gchar const *str, SVGLength::Unit *unit, float *val, float *computed, char **next)
{
if (!str) {
return 0;
}
gchar const *e;
float const v = g_ascii_strtod(str, (char **) &e);
if (e == str) {
return 0;
}
if (!e[0]) {
/* Unitless */
if (unit) {
*unit = SVGLength::NONE;
}
if (val) {
*val = v;
}
if (computed) {
*computed = v;
}
if (next) {
*next = NULL; // no more values
}
return 1;
} else if (!g_ascii_isalnum(e[0])) {
/* Unitless or percent */
if (e[0] == '%') {
/* Percent */
if (e[1] && g_ascii_isalnum(e[1])) {
return 0;
}
if (unit) {
*unit = SVGLength::PERCENT;
}
if (val) {
*val = v * 0.01;
}
if (computed) {
*computed = v * 0.01;
}
if (next) {
*next = (char *) e + 1;
}
return 1;
} else {
/* Unitless */
if (unit) {
*unit = SVGLength::NONE;
}
if (val) {
*val = v;
}
if (computed) {
*computed = v;
}
if (next) {
*next = (char *) e;
}
return 1;
}
} else if (e[1] && !g_ascii_isalnum(e[2])) {
/* TODO: Allow the number of px per inch to vary (document preferences, X server
* or whatever). E.g. don't fill in computed here, do it at the same time as
* percentage units are done. */
unsigned int const uval = UVAL(e[0], e[1]);
switch (uval) {
case UVAL('p','x'):
if (unit) {
*unit = SVGLength::PX;
}
if (computed) {
*computed = v;
}
break;
case UVAL('p','t'):
if (unit) {
*unit = SVGLength::PT;
}
if (computed) {
*computed = v * PX_PER_PT;
}
break;
case UVAL('p','c'):
if (unit) {
*unit = SVGLength::PC;
}
if (computed) {
*computed = v * PX_PER_PC;
}
break;
case UVAL('m','m'):
if (unit) {
*unit = SVGLength::MM;
}
if (computed) {
*computed = v * PX_PER_MM;
}
break;
case UVAL('c','m'):
if (unit) {
*unit = SVGLength::CM;
}
if (computed) {
*computed = v * PX_PER_CM;
}
break;
case UVAL('i','n'):
if (unit) {
*unit = SVGLength::INCH;
}
if (computed) {
*computed = v * PX_PER_IN;
}
break;
case UVAL('f','t'):
if (unit) {
*unit = SVGLength::FOOT;
}
if (computed) {
*computed = v * PX_PER_FT;
}
break;
case UVAL('e','m'):
if (unit) {
*unit = SVGLength::EM;
}
break;
case UVAL('e','x'):
if (unit) {
*unit = SVGLength::EX;
}
break;
default:
/* Invalid */
return 0;
break;
}
if (val) {
*val = v;
}
if (next) {
*next = (char *) e + 2;
}
return 1;
}
/* Invalid */
return 0;
}
