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eda-tools/eeshow/lib-parse.c

353 lines
7.6 KiB
C

/*
* 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.h"
#include "lib.h"
/* ----- Text -------------------------------------------------------------- */
static enum text_style decode_style(const char *s)
{
if (!strcmp(s, "Normal"))
return text_normal;
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;
char draw_num, draw_name;
unsigned name_offset;
unsigned units;
if (sscanf(line, "DEF %ms %*s %*d %u %c %c %u",
&s, &name_offset, &draw_num, &draw_name, &units) != 5)
return 0;
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';
lib->curr_comp->show_pin_num = draw_num == 'Y';
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);
}
}