mirror of
git://projects.qi-hardware.com/eda-tools.git
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438 lines
8.3 KiB
C
438 lines
8.3 KiB
C
/*
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* sch.c - Parse Eeschema .sch file
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*
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* Written 2016 by Werner Almesberger
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* Copyright 2016 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "util.h"
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#include "misc.h"
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#include "style.h"
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#include "fig.h"
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#include "lib.h"
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#include "sch.h"
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/* ----- (Global) Labels --------------------------------------------------- */
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static enum fig_shape do_decode_shape(const char *s)
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{
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if (!strcmp(s, "UnSpc"))
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return fig_unspec;
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if (!strcmp(s, "Input"))
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return fig_in;
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if (!strcmp(s, "Output"))
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return fig_out;
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if (!strcmp(s, "3State"))
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return fig_tri;
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if (!strcmp(s, "BiDi"))
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return fig_bidir;
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fprintf(stderr, "unknown shape: \"%s\"\n", s);
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exit(1);
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}
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static enum fig_shape decode_shape(const char *s)
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{
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enum fig_shape res;
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res = do_decode_shape(s);
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free((void *) s);
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return res;
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}
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/* ----- Text -------------------------------------------------------------- */
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static void draw_text(int x, int y, const char *s, int dir, int dim,
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enum fig_shape shape)
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{
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struct text txt = {
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.s = s,
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.size = dim,
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.x = x,
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.y = y,
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.rot = 0,
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.hor = text_min,
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.vert = text_min,
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};
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switch (dir) {
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case 0: /* right */
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break;
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case 1: /* up */
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text_rot(&txt, 90);
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break;
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case 2: /* left */
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txt.hor = text_max;
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break;
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case 3: /* down */
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text_rot(&txt, 90);
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txt.hor = text_max;
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break;
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default:
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assert(2 + 2 == 5);
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}
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text_fig(&txt, COLOR_TEXT, LAYER_TEXT);
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}
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/* ----- Component fields -------------------------------------------------- */
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struct sch_field {
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struct text txt;
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struct sch_field *next;
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};
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void decode_alignment(struct text *txt, char hor, char vert)
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{
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switch (hor) {
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case 'L':
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txt->hor = text_min;
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break;
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case 'C':
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txt->hor = text_mid;
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break;
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case 'R':
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txt->hor = text_max;
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break;
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default:
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assert(0);
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}
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switch (vert) {
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case 'B':
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txt->vert = text_min;
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break;
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case 'C':
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txt->vert = text_mid;
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break;
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case 'T':
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txt->vert = text_max;
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break;
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default:
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assert(0);
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}
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}
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static bool parse_field(struct sch_ctx *ctx, const char *line)
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{
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int n;
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unsigned flags;
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char hv, hor, vert, italic, bold;
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struct sch_field *field;
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struct text *txt;
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field = alloc_type(struct sch_field);
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txt = &field->txt;
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if (sscanf(line, "F %d \"\" %c %d %d %u %u %c %c%c%c",
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&n, &hv, &txt->x, &txt->y, &txt->size, &flags, &hor, &vert,
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&italic, &bold) == 10) {
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free(field);
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return 1;
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}
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if (sscanf(line, "F %d \"%m[^\"]\" %c %d %d %u %u %c %c%c%c",
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&n, &txt->s, &hv, &txt->x, &txt->y, &txt->size, &flags,
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&hor, &vert, &italic, &bold) != 11)
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return 0;
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if (flags || !lib_field_visible(ctx->comp, n)) {
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free(field);
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return 1;
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}
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if (n == 0 && ctx->comp->units > 1) {
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int len = strlen(txt->s);
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char *s;
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s = realloc((void *) txt->s, len + 3);
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if (!s) {
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perror("realloc");
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exit(1);
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}
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if (ctx->unit <= 26)
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sprintf(s + len, "%c", 'A' + ctx->unit - 1);
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else
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sprintf(s + len, "%c%c",
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'A' + (ctx->unit - 1) / 26 - 1,
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'A' + (ctx->unit - 1) % 26);
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txt->s = s;
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}
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field->next = ctx->fields;
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ctx->fields = field;
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switch (hv) {
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case 'H':
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txt->rot = 0;
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break;
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case 'V':
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txt->rot = 90;
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break;
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default:
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assert(0);
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}
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decode_alignment(txt, hor, vert);
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// @@@ decode font
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return 1;
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}
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static void dump_field(const struct sch_field *field, int m[6])
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{
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struct text txt = field->txt;
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int dx, dy;
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dx = txt.x - m[0];
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dy = txt.y - m[3];
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txt.x = mx(dx, dy, m);
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txt.y = my(dx, dy, m);
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text_rot(&txt, matrix_to_angle(m));
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switch (txt.rot) {
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case 180:
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text_rot(&txt, 180);
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txt.hor = text_flip(txt.hor);
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txt.vert = text_flip(txt.vert);
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break;
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case 270:
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text_rot(&txt, 180);
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txt.vert = text_flip(txt.vert);
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txt.hor = text_flip(txt.hor);
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break;
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default:
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break;
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}
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if (matrix_is_mirrored(m)) {
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if ((txt.rot % 180) == 0)
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txt.hor = text_flip(txt.hor);
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else
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txt.vert = text_flip(txt.vert);
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}
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text_fig(&txt, COLOR_FIELD, LAYER_FIELD);
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}
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static void dump_fields(struct sch_field *fields, int m[6])
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{
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while (fields) {
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struct text *txt = &fields->txt;
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struct sch_field *next = fields->next;
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dump_field(fields, m);
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text_free(txt);
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free(fields);
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fields = next;
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}
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}
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/* ----- Schematics parser ------------------------------------------------- */
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bool sch_parse(struct sch_ctx *ctx, const char *line)
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{
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int n = 0;
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int x, y, ex, ey;
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char *s;
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int m[4];
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ctx->lineno++;
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switch (ctx->state) {
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case sch_basic:
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if (sscanf(line, "$Comp%n", &n) == 0 && n) {
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ctx->state = sch_comp;
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ctx->fields = NULL;
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return 1;
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}
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if (sscanf(line, "$Sheet%n", &n) == 0 && n) {
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ctx->state = sch_sheet;
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return 1;
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}
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/* Text */
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if (sscanf(line, "Text Notes %d %d %d %d",
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&ctx->x, &ctx->y, &ctx->dir, &ctx->dim) == 4) {
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ctx->state = sch_text;
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ctx->text = draw_text;
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return 1;
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}
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if (sscanf(line, "Text GLabel %d %d %d %d %ms",
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&ctx->x, &ctx->y, &ctx->dir, &ctx->dim, &s) == 5) {
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ctx->state = sch_text;
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ctx->shape = decode_shape(s);
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ctx->text = fig_glabel;
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return 1;
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}
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if (sscanf(line, "Text HLabel %d %d %d %d %ms",
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&ctx->x, &ctx->y, &ctx->dir, &ctx->dim, &s) == 5) {
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ctx->state = sch_text;
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unsupported("Text HLabel");
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ctx->text = NULL;
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return 1;
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}
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if (sscanf(line, "Text Label %d %d %d %d",
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&ctx->x, &ctx->y, &ctx->dir, &ctx->dim) == 4) {
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ctx->state = sch_text;
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ctx->text = fig_label;
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return 1;
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}
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if (sscanf(line, "Entry Wire Line%n", &n) == 0 && n) {
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ctx->state = sch_text;
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unsupported("Entry Wire Line");
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ctx->text = NULL;
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return 1;
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}
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if (sscanf(line, "Entry Bus Bus%n", &n) == 0 && n) {
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ctx->state = sch_text;
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unsupported("Entry Bus Bus");
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ctx->text = NULL;
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return 1;
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}
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/* Connection */
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if (sscanf(line, "Connection ~ %d %d", &x, &y) == 2) {
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fig_junction(x, y);
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return 1;
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}
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/* NoConn */
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if (sscanf(line, "NoConn ~ %d %d", &x, &y) == 2) {
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fig_noconn(x, y);
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return 1;
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}
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/* Wire */
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if (sscanf(line, "Wire Wire Line%n", &n) == 0 && n) {
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ctx->state = sch_wire;
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ctx->wire = fig_wire;
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return 1;
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}
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if (sscanf(line, "Wire Bus Line%n", &n) == 0 && n) {
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ctx->state = sch_wire;
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unsupported("Wire Bus Line");
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ctx->wire = NULL;
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return 1;
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}
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if (sscanf(line, "Wire Notes Line%n", &n) == 0 && n) {
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ctx->state = sch_wire;
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ctx->wire = fig_line;
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return 1;
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}
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if (sscanf(line, "Wire Wire Bus%n", &n) == 0 && n) {
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ctx->state = sch_wire;
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unsupported("Wire Wire Bus");
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ctx->wire = NULL;
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return 1;
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}
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if (sscanf(line, "Wire Bus Bus%n", &n) == 0 && n) {
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ctx->state = sch_wire;
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unsupported("Wire Bus Bus");
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ctx->wire = NULL;
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return 1;
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}
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/* EndSCHEMATC */
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if (sscanf(line, "$EndSCHEMATC%n", &n) == 0 && n)
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return 0;
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break;
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case sch_descr:
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if (sscanf(line, "$EndDescr%n", &n) || !n)
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return 1;
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ctx->state = sch_basic;
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return 1;
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case sch_comp:
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if (sscanf(line, "$EndComp%n", &n) == 0 && n) {
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ctx->state = sch_basic;
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ctx->comp = NULL;
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return 1;
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}
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if (sscanf(line, "L %ms", &s) == 1) {
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ctx->comp = lib_find(s);
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free(s);
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return 1;
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}
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if (sscanf(line, "U %u", &ctx->unit) == 1)
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return 1;
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if (sscanf(line, "P %d %d", &ctx->x, &ctx->y) == 2)
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return 1;
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if (parse_field(ctx, line))
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return 1;
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if (sscanf(line, "AR %n", &n) == 0 && n)
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return 1; /* @@@ what is "AR" ? */
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n = sscanf(line, " %d %d %d %d", m + 1, m + 2, m + 4, m + 5);
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if (n == 3)
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return 1;
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if (n == 4) {
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m[0] = ctx->x;
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m[3] = ctx->y;
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lib_exec(ctx->comp, ctx->unit, m);
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dump_fields(ctx->fields, m);
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return 1;
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}
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break;
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case sch_sheet:
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if (sscanf(line, "$EndSheet%n", &n) || !n)
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return 1;
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ctx->state = sch_basic;
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return 1;
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case sch_text:
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ctx->state = sch_basic;
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if (ctx->text)
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ctx->text(ctx->x, ctx->y, line, ctx->dir, ctx->dim,
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ctx->shape);
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return 1;
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case sch_wire:
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if (sscanf(line, "%d %d %d %d", &x, &y, &ex, &ey) != 4)
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break;
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if (ctx->wire)
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ctx->wire(x, y, ex, ey);
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ctx->state = sch_basic;
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return 1;
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default:
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abort();
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}
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fprintf(stderr, "%u: cannot parse\n\"%s\"\n", ctx->lineno, line);
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exit(1);
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}
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void sch_init(struct sch_ctx *ctx)
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{
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ctx->state = sch_descr;
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ctx->lineno = 0;
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}
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