First commit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 83 insertions, 0 deletions

diff --git a/libparsepcf_get_accelerators.c b/libparsepcf_get_accelerators.c
new file mode 100644
index 0000000..af3224a
--- /dev/null
+++ b/libparsepcf_get_accelerators.c
@@ -0,0 +1,83 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+
+int
+libparsepcf_get_accelerators(const char *file, size_t size,
+                             const struct libparsepcf_table *table,
+                             struct libparsepcf_accelerators *out)
+{
+	int msb = table->format & LIBPARSEPCF_BYTE;
+	int with_ink_bounds = table->format & LIBPARSEPCF_ACCELERATOR_WITH_INK_BOUNDS;
+	size_t pos;
+
+	(void) size;
+
+	if (table->size < 24 + (with_ink_bounds ? 4 : 2) * 12)
+		goto ebfont;
+
+	pos = table->offset;
+
+	if (table->format != libparsepcf_parse_lsb_uint32__(&file[pos]))
+		goto ebfont;
+	pos += 4;
+
+	out->no_overlap       = !!file[pos + 0];
+	out->constant_metrics = !!file[pos + 1];
+	out->terminal_font    = !!file[pos + 2];
+	out->constant_width   = !!file[pos + 3];
+	out->ink_inside       = !!file[pos + 4];
+	out->ink_metrics      = !!file[pos + 5];
+	out->draw_rtl         = !!file[pos + 6];
+	out->have_ink_bounds  = !!with_ink_bounds;
+	pos += 8;
+
+	out->font_ascent  = PARSE_INT32(&file[pos + 0], msb);
+	out->font_descent = PARSE_INT32(&file[pos + 4], msb);
+	out->max_overlap  = PARSE_INT32(&file[pos + 8], msb);
+	pos += 12;
+
+	out->min_bounds.left_side_bearing    = PARSE_INT16(&file[pos + 0], msb);
+	out->min_bounds.right_side_bearing   = PARSE_INT16(&file[pos + 2], msb);
+	out->min_bounds.character_width      = PARSE_INT16(&file[pos + 4], msb);
+	out->min_bounds.character_ascent     = PARSE_INT16(&file[pos + 6], msb);
+	out->min_bounds.character_descent    = PARSE_INT16(&file[pos + 8], msb);
+	out->min_bounds.character_attributes = PARSE_UINT16(&file[pos + 10], msb);
+	pos += 12;
+
+	out->max_bounds.left_side_bearing    = PARSE_INT16(&file[pos + 0], msb);
+	out->max_bounds.right_side_bearing   = PARSE_INT16(&file[pos + 2], msb);
+	out->max_bounds.character_width      = PARSE_INT16(&file[pos + 4], msb);
+	out->max_bounds.character_ascent     = PARSE_INT16(&file[pos + 6], msb);
+	out->max_bounds.character_descent    = PARSE_INT16(&file[pos + 8], msb);
+	out->max_bounds.character_attributes = PARSE_UINT16(&file[pos + 10], msb);
+	pos += 12;
+
+	if (with_ink_bounds) {
+		out->min_ink_bounds.left_side_bearing    = PARSE_INT16(&file[pos + 0], msb);
+		out->min_ink_bounds.right_side_bearing   = PARSE_INT16(&file[pos + 2], msb);
+		out->min_ink_bounds.character_width      = PARSE_INT16(&file[pos + 4], msb);
+		out->min_ink_bounds.character_ascent     = PARSE_INT16(&file[pos + 6], msb);
+		out->min_ink_bounds.character_descent    = PARSE_INT16(&file[pos + 8], msb);
+		out->min_ink_bounds.character_attributes = PARSE_UINT16(&file[pos + 10], msb);
+		pos += 12;
+
+		out->max_ink_bounds.left_side_bearing    = PARSE_INT16(&file[pos + 0], msb);
+		out->max_ink_bounds.right_side_bearing   = PARSE_INT16(&file[pos + 2], msb);
+		out->max_ink_bounds.character_width      = PARSE_INT16(&file[pos + 4], msb);
+		out->max_ink_bounds.character_ascent     = PARSE_INT16(&file[pos + 6], msb);
+		out->max_ink_bounds.character_descent    = PARSE_INT16(&file[pos + 8], msb);
+		out->max_ink_bounds.character_attributes = PARSE_UINT16(&file[pos + 10], msb);
+		pos += 12;
+	} else {
+		memcpy(&out->min_ink_bounds, &out->min_bounds, sizeof(out->min_bounds));
+		memcpy(&out->max_ink_bounds, &out->max_bounds, sizeof(out->max_bounds));
+	}
+
+	return 0;
+
+ebfont:
+	errno = EBFONT;
+	return -1;
+}