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-rw-r--r--kicad/lib-parse.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/kicad/lib-parse.c b/kicad/lib-parse.c
new file mode 100644
index 0000000..a4c8d6f
--- /dev/null
+++ b/kicad/lib-parse.c
@@ -0,0 +1,358 @@
+/*
+ * kicad/lib.c - Parse Eeschema .lib file
+ *
+ * Written 2016 by Werner Almesberger
+ * Copyright 2016 by Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+
+#include "util.h"
+#include "diag.h"
+#include "text.h"
+#include "file/file.h"
+#include "kicad/lib.h"
+
+
+/* ----- Text -------------------------------------------------------------- */
+
+
+static enum text_style decode_style(const char *s)
+{
+ if (!strcmp(s, "Normal"))
+ return text_normal;
+ if (!strcmp(s, "Italic"))
+ return text_italic;
+ assert(0);
+}
+
+
+/* ----- Polygons ---------------------------------------------------------- */
+
+
+static bool parse_poly(struct lib_poly *poly, const char *line, int points)
+{
+ int i, n;
+
+ poly->points = points;
+ poly->x = alloc_type_n(int, points);
+ poly->y = alloc_type_n(int, points);
+ for (i = 0; i != points; i++) {
+ if (sscanf(line, "%d %d %n",
+ poly->x + i, poly->y + i, &n) != 2)
+ return 0;
+ line += n;
+ }
+ if (sscanf(line, "%c", &poly->fill) != 1)
+ return 0;
+ return 1;
+}
+
+
+/* ----- Definitions ------------------------------------------------------- */
+
+
+static bool parse_def(struct lib *lib, const char *line)
+{
+ char *s, *ref;
+ char draw_num, draw_name;
+ unsigned name_offset;
+ unsigned units;
+ bool power;
+
+ if (sscanf(line, "DEF %ms %ms %*d %u %c %c %u",
+ &s, &ref, &name_offset, &draw_num, &draw_name, &units) != 6)
+ return 0;
+
+ power = *ref == '#';
+ free(ref);
+
+ lib->curr_comp = alloc_type(struct comp);
+ if (*s == '~') {
+ char *tmp = alloc_size(strlen(s) + 1);
+
+ /* we can't just s++, since that would break freeing */
+ strcpy(tmp, s + 1);
+ free(s);
+ s = tmp;
+ }
+ lib->curr_comp->name = s;
+ lib->curr_comp->aliases = NULL;
+ lib->curr_comp->units = units;
+
+ lib->curr_comp->visible = 0;
+ lib->curr_comp->show_pin_name = draw_name == 'Y' && !power;
+ lib->curr_comp->show_pin_num = draw_num == 'Y' && !power;
+ lib->curr_comp->name_offset = name_offset;
+
+ lib->curr_comp->objs = NULL;
+ lib->next_obj = &lib->curr_comp->objs;
+
+ lib->curr_comp->next = NULL;
+ *lib->next_comp = lib->curr_comp;
+ lib->next_comp = &lib->curr_comp->next;
+
+ return 1;
+}
+
+
+/* ----- Arcs -------------------------------------------------------------- */
+
+
+static bool parse_arc(struct lib_obj *obj, const char *line)
+{
+ struct lib_arc *arc = &obj->u.arc;
+ int a1, a2;
+
+ if (sscanf(line, "A %d %d %d %d %d %u %u %u %c",
+ &arc->x, &arc->y, &arc->r, &a1, &a2, &obj->unit, &obj->convert,
+ &arc->thick, &arc->fill) != 9)
+ return 0;
+
+ /*
+ * KiCad arcs can be clockwise or counter-clockwise. They must always
+ * be smaller than 180 degrees.
+ */
+
+ while (a1 < 0)
+ a1 += 3600;
+ while (a2 < 0)
+ a2 += 3600;
+ a1 %= 3600;
+ a2 %= 3600;
+ if (a2 < a1)
+ a2 += 3600;
+ assert(a2 - a1 != 1800);
+ if (a2 - a1 > 1800)
+ swap(a1, a2);
+
+ arc->start_a = (a1 % 3600) / 10;
+ arc->end_a = (a2 % 3600) / 10;
+
+ return 1;
+}
+
+
+/* ----- Aliases ----------------------------------------------------------- */
+
+
+static void add_alias(struct comp *comp, const char *alias)
+{
+ struct comp_alias *new;
+
+ new = alloc_type(struct comp_alias);
+ new->name = alias;
+ new->next = comp->aliases;
+ comp->aliases = new;
+}
+
+
+/* ----- Library parser ---------------------------------------------------- */
+
+
+static bool lib_parse_line(const struct file *file,
+ void *user, const char *line)
+{
+ struct lib *lib = user;
+ int n = 0;
+ unsigned points;
+ struct lib_obj *obj;
+ char *s, *style;
+ unsigned zero1, zero2;
+ char vis;
+
+ switch (lib->state) {
+ case lib_skip:
+ if (parse_def(lib, line)) {
+ lib->state = lib_def;
+ return 1;
+ }
+ return 1;
+ case lib_def:
+ if (sscanf(line, "DRAW%n", &n) == 0 && n) {
+ lib->state = lib_draw;
+ return 1;
+ }
+ if (sscanf(line, "F%d \"\" %*d %*d %*d %*c %c", &n, &vis) == 2
+ || sscanf(line, "F%d \"%*[^\"]\" %*d %*d %*d %*c %c",
+ &n, &vis) == 2) {
+ if (vis == 'V')
+ lib->curr_comp->visible |= 1 << n;
+ return 1;
+ }
+ if (sscanf(line, "ALIAS %ms", &s) == 1) {
+ add_alias(lib->curr_comp, s);
+ return 1;
+ }
+ /* @@@ explicitly ignore FPLIST */
+ return 1;
+ case lib_draw:
+ if (sscanf(line, "ENDDRAW%n", &n) == 0 && n) {
+ lib->state = lib_skip;
+ return 1;
+ }
+
+ obj = alloc_type(struct lib_obj);
+ obj->next = NULL;
+ *lib->next_obj = obj;
+ lib->next_obj = &obj->next;
+
+ if (sscanf(line, "P %u %u %u %u %n",
+ &points, &obj->unit, &obj->convert, &obj->u.poly.thick,
+ &n) == 4) {
+ obj->type = lib_obj_poly;
+ if (parse_poly(&obj->u.poly, line + n, points))
+ return 1;
+ break;
+ }
+ if (sscanf(line, "S %d %d %d %d %u %u %d %c",
+ &obj->u.rect.sx, &obj->u.rect.sy, &obj->u.rect.ex,
+ &obj->u.rect.ey, &obj->unit, &obj->convert,
+ &obj->u.rect.thick, &obj->u.rect.fill) == 8) {
+ obj->type = lib_obj_rect;
+ return 1;
+ }
+ if (sscanf(line, "C %d %d %d %u %u %d %c",
+ &obj->u.circ.x, &obj->u.circ.y, &obj->u.circ.r,
+ &obj->unit, &obj->convert, &obj->u.circ.thick,
+ &obj->u.circ.fill) == 7) {
+ obj->type = lib_obj_circ;
+ return 1;
+ }
+ if (parse_arc(obj, line)) {
+ obj->type = lib_obj_arc;
+ return 1;
+ }
+ n = sscanf(line,
+ "T %d %d %d %d %u %u %u \"%m[^\"]\" %ms %u %c %c",
+ &obj->u.text.orient, &obj->u.text.x, &obj->u.text.y,
+ &obj->u.text.dim, &zero1, &obj->unit, &obj->convert,
+ &obj->u.text.s, &style, &zero2,
+ &obj->u.text.hor_align, &obj->u.text.vert_align);
+ if (n != 12) {
+ n = sscanf(line,
+ "T %d %d %d %d %u %u %u %ms %ms %u %c %c",
+ &obj->u.text.orient, &obj->u.text.x, &obj->u.text.y,
+ &obj->u.text.dim, &zero1, &obj->unit, &obj->convert,
+ &obj->u.text.s, &style, &zero2,
+ &obj->u.text.hor_align, &obj->u.text.vert_align);
+ while (n == 12) {
+ char *tilde;
+
+ tilde = strchr(obj->u.text.s, '~');
+ if (!tilde)
+ break;
+ *tilde = ' ';
+ }
+ }
+ /*
+ * zero2 seems to be the font style: 0 = normal, 1 = bold ?
+ */
+ if (n == 12) {
+ if (zero1)
+ fatal("%u: only understand 0 x x\n"
+ "\"%s\"\n", file->lineno, line);
+ obj->u.text.style = decode_style(style);
+ obj->type = lib_obj_text;
+ return 1;
+ }
+ if (sscanf(line, "X %ms %ms %d %d %d %c %d %d %u %u %c",
+ &obj->u.pin.name, &obj->u.pin.number,
+ &obj->u.pin.x, &obj->u.pin.y, &obj->u.pin.length,
+ &obj->u.pin.orient,
+ &obj->u.pin.number_size, &obj->u.pin.name_size,
+ &obj->unit, &obj->convert, &obj->u.pin.etype) == 11) {
+ obj->type = lib_obj_pin;
+ return 1;
+ }
+ break;
+ default:
+ abort();
+ }
+ fatal("%u: cannot parse\n\"%s\"\n", file->lineno, line);
+}
+
+
+bool lib_parse_file(struct lib *lib, struct file *file)
+{
+ lib->state = lib_skip;
+ return file_read(file, lib_parse_line, lib);
+}
+
+
+
+bool lib_parse(struct lib *lib, const char *name, const struct file *related)
+{
+ struct file file;
+ bool res;
+
+ if (!file_open(&file, name, related))
+ return 0;
+ res = lib_parse_file(lib, &file);
+ file_close(&file);
+ return res;
+}
+
+
+void lib_init(struct lib *lib)
+{
+ lib->comps = NULL;
+ lib->next_comp = &lib->comps;
+}
+
+
+static void free_objs(struct lib_obj *objs)
+{
+ struct lib_obj *next;
+
+ while (objs) {
+ next = objs->next;
+ switch (objs->type) {
+ case lib_obj_text:
+ free((char *) objs->u.text.s);
+ break;
+ case lib_obj_pin:
+ free((char *) objs->u.pin.name);
+ free((char *) objs->u.pin.number);
+ break;
+ default:
+ break;
+ }
+ free(objs);
+ objs = next;
+ }
+}
+
+
+static void free_comp(struct comp *comp)
+{
+ struct comp_alias *next;
+
+ free((char *) comp->name);
+ while (comp->aliases) {
+ next = comp->aliases->next;
+ free((char *) comp->aliases->name);
+ comp->aliases = next;
+ }
+ free_objs(comp->objs);
+ free(comp);
+}
+
+
+void lib_free(struct lib *lib)
+{
+ struct comp *comp, *next;
+
+ for (comp = lib->comps; comp; comp = next) {
+ next = comp->next;
+ free_comp(comp);
+ }
+}