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eda-tools/eeshow/delta.c

385 lines
8.5 KiB
C

/*
* delta.c - Find differences in .sch files
*
* 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 <stddef.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
#include "text.h"
#include "lib.h"
#include "sch.h"
#include "delta.h"
/*
* @@@ we should clone components and compare them, too
*
* if two components or sub-sheets mismatch in their field lists, we should
* remove matching items from the lists.
*
* @@@@ line(A, B) == line(B, A), etc.
*/
/* ----- Components -------------------------------------------------------- */
static bool comp_eq_objs(const struct lib_obj *a, const struct lib_obj *b)
{
/*
* @@@ over-simplify a little. We don't search to find objects that
* have merely been reordered.
*/
while (a && b) {
if (a->type != b->type)
return 0;
if (a->unit != b->unit || a->convert != b->convert)
return 0;
switch (a->type) {
case lib_obj_poly:
case lib_obj_rect:
return a->u.rect.sx == b->u.rect.sx &&
a->u.rect.ex == a->u.rect.ey &&
a->u.rect.thick == b->u.rect.thick &&
a->u.rect.fill == b->u.rect.fill;
case lib_obj_circ:
return a->u.circ.x == b->u.circ.x &&
a->u.circ.y == b->u.circ.y &&
a->u.circ.r == b->u.circ.r &&
a->u.circ.thick == b->u.circ.thick &&
a->u.circ.fill == b->u.circ.fill;
case lib_obj_arc:
return a->u.arc.x == b->u.arc.x &&
a->u.arc.y == b->u.arc.y &&
a->u.arc.r == b->u.arc.r &&
a->u.arc.start_a == b->u.arc.start_a &&
a->u.arc.end_a == b->u.arc.end_a &&
a->u.arc.thick == b->u.arc.thick &&
a->u.arc.fill == b->u.arc.fill;
case lib_obj_text:
return a->u.text.x == b->u.text.x &&
a->u.text.y == b->u.text.y &&
a->u.text.dim == b->u.text.dim &&
a->u.text.orient == b->u.text.orient &&
a->u.text.style == b->u.text.style &&
a->u.text.hor_align == b->u.text.hor_align &&
a->u.text.vert_align == b->u.text.vert_align &&
!strcmp(a->u.text.s, b->u.text.s);
case lib_obj_pin:
return a->u.pin.x == b->u.pin.x &&
a->u.pin.y == b->u.pin.y &&
a->u.pin.length == b->u.pin.length &&
a->u.pin.orient == b->u.pin.orient &&
a->u.pin.number_size == b->u.pin.number_size &&
a->u.pin.name_size == b->u.pin.name_size &&
a->u.pin.etype == b->u.pin.etype &&
!strcmp(a->u.pin.name, b->u.pin.name) &&
!strcmp(a->u.pin.number, b->u.pin.number);
default:
abort();
}
a = a->next;
b = b->next;
}
return a == b;
}
static bool comp_eq_aliases(const struct comp_alias *a,
const struct comp_alias *b)
{
while (a && b) {
if (strcmp(a->name, b->name))
return 0;
a = a->next;
b = b->next;
}
return a == b;
}
static bool comp_eq(const struct comp *a, const struct comp *b)
{
if (a == b)
return 1;
if (!(a && b))
return 0;
if (strcmp(a->name, b->name))
return 0;
if (a->units != b->units)
return 0;
#if 0
/* @@@ in-sheet settings override this */
if (a->visible != b->visible)
return 0;
#endif
if (a->show_pin_name != b->show_pin_name)
return 0;
if (a->show_pin_num != b->show_pin_num)
return 0;
if (a->name_offset != b->name_offset)
return 0;
if (!comp_eq_aliases(a->aliases, b->aliases))
return 0;
return comp_eq_objs(a->objs, b->objs);
}
/* ----- Sheets ------------------------------------------------------------ */
static struct sch_obj *objs_clone(const struct sch_obj *objs)
{
struct sch_obj *new_objs = NULL;
struct sch_obj **next = &new_objs;
const struct sch_obj *obj;
for (obj = objs; obj; obj = obj->next) {
*next = alloc_type(struct sch_obj);
**next = *obj;
next = &(*next)->next;
}
*next = NULL;
return new_objs;
}
static void add_obj(struct sheet *sch, struct sch_obj *obj)
{
*sch->next_obj = obj;
sch->next_obj = &obj->next;
obj->next = NULL;
}
static bool comp_fields_eq(const struct comp_field *a,
const struct comp_field *b)
{
while (a && b) {
if (a->txt.x != b->txt.x || a->txt.y != b->txt.y)
return 0;
if (a->txt.size != b->txt.size)
return 0;
if (a->txt.rot != b->txt.rot)
return 0;
if (a->txt.hor != b->txt.hor || a->txt.vert != b->txt.vert)
return 0;
if (strcmp(a->txt.s, b->txt.s))
return 0;
a = a->next;
b = b->next;
}
return a == b;
}
static bool sheet_fields_eq(const struct sheet_field *a,
const struct sheet_field *b)
{
const struct sheet_field *ta;
const struct sheet_field *tb;
for (ta = a; ta; ta = ta->next) {
for (tb = b; tb; tb = tb->next) {
if (ta->x != tb->x || ta->y != tb->y)
continue;
if (ta->dim != tb->dim)
continue;
if (ta->dim != tb->dim)
continue;
if (ta->shape != tb->shape)
continue;
if (strcmp(ta->s, tb->s))
continue;
goto match;
}
return 0;
match:
continue;
}
while (a && b) {
a = a->next;
b = b->next;
}
return a == b;
}
/*
* @@@ idea: if we send all strings through a "unique" function, we can
* memcmp things like "struct sch_text" without having to go through the
* fields individually.
*/
static bool obj_eq(const struct sch_obj *a, const struct sch_obj *b,
bool recurse)
{
if (a->type != b->type)
return 0;
if (a->x != b->x || a->y != b->y)
return 0;
switch (a->type) {
case sch_obj_wire:
if (a->u.wire.fn != b->u.wire.fn)
return 0;
if (a->x != b->x || a->y != b->y)
return 0;
if (a->u.wire.ex != b->u.wire.ex ||
a->u.wire.ey != b->u.wire.ey)
return 0;
return 1;
case sch_obj_junction:
return 1;
case sch_obj_noconn:
return 1;
case sch_obj_glabel:
case sch_obj_text:
if (a->u.text.fn != b->u.text.fn)
return 0;
if (a->u.text.dir != b->u.text.dir)
return 0;
if (a->u.text.dim != b->u.text.dim)
return 0;
if (a->u.text.shape != b->u.text.shape)
return 0;
if (strcmp(a->u.text.s, b->u.text.s))
return 0;
return 1;
case sch_obj_comp:
if (!comp_eq(a->u.comp.comp, b->u.comp.comp))
return 0;
if (a->u.comp.unit != b->u.comp.unit)
return 0;
if (memcmp(a->u.comp.m, b->u.comp.m, sizeof(a->u.comp.m)))
return 0;
return comp_fields_eq(a->u.comp.fields, b->u.comp.fields);
case sch_obj_sheet:
if (a->u.sheet.w != b->u.sheet.w)
return 0;
if (a->u.sheet.h != b->u.sheet.h)
return 0;
if (a->u.sheet.name_dim != b->u.sheet.name_dim)
return 0;
if (a->u.sheet.file_dim != b->u.sheet.file_dim)
return 0;
if (a->u.sheet.rotated != b->u.sheet.rotated)
return 0;
if (strcmp(a->u.sheet.name, b->u.sheet.name))
return 0;
if (strcmp(a->u.sheet.file, b->u.sheet.file))
return 0;
if (!sheet_fields_eq(a->u.sheet.fields, b->u.sheet.fields))
return 0;
if (!recurse)
return 1;
return sheet_eq(a->u.sheet.sheet, b->u.sheet.sheet);
default:
abort();
}
}
bool sheet_eq(const struct sheet *a, const struct sheet *b)
{
const struct sch_obj *obj_a, *obj_b;
if (a == NULL && b == NULL)
return 1;
if (!(a && b))
return 0;
if (a->title != b->title && strcmp(a->title, b->title))
return 0;
obj_a = a->objs;
obj_b = b->objs;
while (obj_a && obj_b) {
if (!obj_eq(obj_a, obj_b, 1))
return 0;
obj_a = obj_a->next;
obj_b = obj_b->next;
}
return obj_a == obj_b;
}
static void free_obj(struct sch_obj *obj)
{
/* there may be more to free once we get into cloning components */
free(obj);
}
static void init_res(struct sheet *res)
{
res->title = NULL;
res->objs = NULL;
res->next_obj = &res->objs;
res->next = NULL;
}
void delta(const struct sheet *a, const struct sheet *b,
struct sheet *res_a, struct sheet *res_b, struct sheet *res_ab)
{
struct sch_obj *objs_a, *objs_b;
struct sch_obj *next_a;
struct sch_obj **obj_b;
init_res(res_a);
init_res(res_b);
init_res(res_ab);
if (!strcmp(a->title, b->title)) {
res_ab->title = a->title;
} else {
res_a->title = a->title;
res_b->title = b->title;
}
objs_a = objs_clone(a->objs);
objs_b = objs_clone(b->objs);
while (objs_a) {
next_a = objs_a->next;
for (obj_b = &objs_b; *obj_b; obj_b = &(*obj_b)->next)
if (obj_eq(objs_a, *obj_b, 0)) {
struct sch_obj *tmp = *obj_b;
add_obj(res_ab, objs_a);
*obj_b = tmp->next;
free_obj(tmp);
goto found;
}
add_obj(res_a, objs_a);
found:
objs_a = next_a;
}
res_b->objs = objs_b;
}
void delta_free(struct sheet *d)
{
struct sch_obj *next;
while (d->objs) {
next = d->objs->next;
free_obj(d->objs);
d->objs = next;
}
}