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mirror of git://projects.qi-hardware.com/eda-tools.git synced 2024-12-23 11:35:12 +02:00

eeshow/delta.c: very coarse structural deltas (WIP)

This commit is contained in:
Werner Almesberger 2016-08-07 14:05:57 -03:00
parent 4418741fc6
commit ba62fc4fc4
3 changed files with 271 additions and 1 deletions

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@ -13,7 +13,7 @@
NAME = eeshow
OBJS = main.o sch-parse.o sch-render.o lib-parse.o lib-render.o \
gui.o gui-over.o gui-aoi.o fmt-pango.o \
file.o git-util.o git-file.o git-hist.o \
file.o git-util.o git-file.o git-hist.o delta.o \
style.o fig.o record.o cro.o diff.o gfx.o dwg.o text.o misc.o
CFLAGS = -g -Wall -Wextra -Wno-unused-parameter -Wshadow \

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eeshow/delta.c Normal file
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/*
* 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 "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.
*/
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 = a;
const struct sheet_field *tb = b;
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)
{
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_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 (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;
return sheet_fields_eq(a->u.sheet.fields, b->u.sheet.fields);
default:
abort();
}
}
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->parent = NULL;
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)) {
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;
}
}

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eeshow/delta.h Normal file
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/*
* delta.h - 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.
*/
#ifndef DELTA_H
#define DELTA_H
#include "sch.h"
void delta(const struct sheet *a, const struct sheet *b,
struct sheet *res_a, struct sheet *res_b, struct sheet *res_ab);
void delta_free(struct sheet *d);
#endif /* !DELTA_H */