libfontmanager/harfbuzz/hb-shape.cc

49 parse_space (const char **pp, const char *end)
51   while (*pp < end && ISSPACE (**pp))
52     (*pp)++;
57 parse_char (const char **pp, const char *end, char c)
59   parse_space (pp, end);
61   if (*pp == end || **pp != c)
64   (*pp)++;
69 parse_uint (const char **pp, const char *end, unsigned int *pv)
72   unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - *pp));
73   strncpy (buf, *pp, len);
88   *pp += pend - p;
93 parse_bool (const char **pp, const char *end, unsigned int *pv)
95   parse_space (pp, end);
97   const char *p = *pp;
98   while (*pp < end && ISALPHA(**pp))
99     (*pp)++;
102   if (*pp - p == 2 || 0 == strncmp (p, "on", 2))
104   else if (*pp - p == 3 || 0 == strncmp (p, "off", 2))
113 parse_feature_value_prefix (const char **pp, const char *end, hb_feature_t *feature)
115   if (parse_char (pp, end, '-'))
118     parse_char (pp, end, '+');
126 parse_feature_tag (const char **pp, const char *end, hb_feature_t *feature)
128   parse_space (pp, end);
132   if (*pp < end && (**pp == '\'' || **pp == '"'))
134     quote = **pp;
135     (*pp)++;
138   const char *p = *pp;
139   while (*pp < end && ISALNUM(**pp))
140     (*pp)++;
142   if (p == *pp || *pp - p > 4)
145   feature->tag = hb_tag_from_string (p, *pp - p);
151      if (*pp - p != 4)
153     if (*pp == end || **pp != quote)
155     (*pp)++;
162 parse_feature_indices (const char **pp, const char *end, hb_feature_t *feature)
164   parse_space (pp, end);
171   if (!parse_char (pp, end, '['))
174   has_start = parse_uint (pp, end, &feature->start);
176   if (parse_char (pp, end, ':')) {
177     parse_uint (pp, end, &feature->end);
183   return parse_char (pp, end, ']');
187 parse_feature_value_postfix (const char **pp, const char *end, hb_feature_t *feature)
189   bool had_equal = parse_char (pp, end, '=');
190   bool had_value = parse_uint (pp, end, &feature->value) ||
191                    parse_bool (pp, end, &feature->value);
200 parse_one_feature (const char **pp, const char *end, hb_feature_t *feature)
202   return parse_feature_value_prefix (pp, end, feature) &&
203          parse_feature_tag (pp, end, feature) &&
204          parse_feature_indices (pp, end, feature) &&
205          parse_feature_value_postfix (pp, end, feature) &&
206          parse_space (pp, end) &&
207          *pp == end;