mirror of
git://projects.qi-hardware.com/eda-tools.git
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404 lines
7.9 KiB
C
404 lines
7.9 KiB
C
/*
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* db.c - Parts database
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*
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* Copyright 2012 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 <stdlib.h>
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#include <stdio.h>
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#include <glib.h>
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#include "util.h"
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#include "lang.h"
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#include "chr.h"
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#include "db.h"
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static GTree *tree = NULL;
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static gint comp(gconstpointer a, gconstpointer b)
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{
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const struct part *pa = a;
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const struct part *pb = b;
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/*
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* Just subtracting the pointers may produce values outside the
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* range of gint values.
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*/
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return pa->domain == pb->domain ?
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pa->name < pb->name ? -1 : pa->name > pb->name ? 1 : 0 :
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pa->domain < pb->domain ? -1 : 1;
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}
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struct part *part_lookup(const char *domain, const char *name)
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{
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struct part part = {
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.domain = domain,
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.name = name,
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};
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if (!tree)
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return NULL;
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return g_tree_lookup(tree, &part);
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}
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struct part *part_add(const char *domain, const char *name)
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{
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struct part part = {
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.domain = domain,
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.name = name,
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.param = NULL,
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.stock = NULL,
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};
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struct part *p;
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if (!tree)
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tree = g_tree_new(comp);
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p = g_tree_lookup(tree, &part);
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if (!p) {
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p = alloc_type(struct part);
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*p = part;
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p->next = p->prev = p;
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g_tree_insert(tree, p, p);
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}
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return p;
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}
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void part_alias(struct part *a, struct part *b)
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{
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struct part *tmp, *tmp2;
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tmp = a->next;
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a->next = b;
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b->prev->next = tmp;
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tmp2 = b->prev;
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b->prev = a;
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tmp->prev = tmp2;
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}
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static void convert_params(struct param **params,
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const struct field *f, struct param ***res)
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{
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struct param **p, *prm;
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const struct selector *sel;
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const struct condition *cond;
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while (f) {
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for (p = params; *p; p = &(*p)->next)
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if ((*p)->u.name == f->name)
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break;
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if (!*p) {
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f = f->next;
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continue;
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}
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/* remove from list */
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prm = *p;
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*p = prm->next;
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/* convert parameter */
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prm->u.field = f;
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if (!evaluate(f->fmt, prm->value.u.s, &prm->value))
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yyerrorf("invalid value for %s", f->name);
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/* add to result list */
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**res = prm;
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*res = &prm->next;
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prm->next = NULL;
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/* process selections */
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for (sel = f->sel; sel; sel = sel->next) {
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for (cond = sel->cond; cond; cond = cond->next)
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if (compare(f->fmt, &prm->value, cond->relop,
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&cond->value))
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break;
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if (cond) {
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convert_params(params, sel->act.fields, res);
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convert_params(params, sel->act.rules, res);
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break;
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}
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}
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if (!sel) {
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convert_params(params, f->any.fields, res);
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convert_params(params, f->any.rules, res);
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}
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f = f->next;
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}
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}
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void part_finalize(struct part *part, const struct action *act)
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{
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struct param *param = part->param;
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struct param **res = &part->param;
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struct param *next;
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part->param = NULL;
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convert_params(¶m, act->fields, &res);
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convert_params(¶m, act->rules, &res);
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while (param) {
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yywarnf("extra parameter: %s", param->u.name);
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next = param->next;
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free(param);
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param = next;
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}
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}
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void part_add_stock(struct part *part, struct stock *s)
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{
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if (!part->stock) {
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part->stock = s;
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return;
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}
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yyerrorf("part %s %s already has stock", part->domain, part->name);
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}
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/* ----- Dumping ----------------------------------------------------------- */
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static void dump_stock(FILE *file, const struct stock *s)
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{
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const struct price *p;
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fprintf(file, " %s %s %d %d %s %g",
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s->provider->name, s->cat, s->avail, s->package, s->curr->name,
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s->add);
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for (p = s->price; p; p = p->next)
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fprintf(file, " %d %g", p->qty, p->value);
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fprintf(file, "\n");
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}
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void part_dump(FILE *file, const struct part *part)
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{
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const struct param *p;
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fprintf(file, "%s %s\n", part->domain, part->name);
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if (part->param) {
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fprintf(file, " ");
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for (p = part->param; p; p = p->next) {
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fprintf(file, " %s=", p->u.field->name);
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dump_param(file, p->u.field->fmt, &p->value);
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}
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fprintf(file, "\n");
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}
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if (part->stock)
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dump_stock(file, part->stock);
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}
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static gboolean dump_prm_traverse(gpointer key, gpointer value, gpointer data)
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{
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struct part *p = key;
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FILE *file = data;
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(void) value;
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part_dump(file, p);
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return FALSE;
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}
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void parts_dump(FILE *file)
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{
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g_tree_foreach(tree, dump_prm_traverse, (void *) file);
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}
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/* ----- Currencies -------------------------------------------------------- */
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static struct currency *currencies = NULL;
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const struct currency *currency_lookup(const char *name)
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{
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const struct currency *c;
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for (c = currencies; c; c = c->next)
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if (c->name == name)
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break;
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return c;
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}
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double currency_convert(const struct currency *from, const struct currency *to,
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double value)
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{
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const struct exchange *ex;
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for (ex = from->exchange; ex; ex = ex->next)
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if (ex->dst == to)
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return ex->rate*value;
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fprintf(stderr, "cannot convert %s to %s\n", from->name, to->name);
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exit(1);
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}
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struct currency *currency_add(const char *name)
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{
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struct currency **c;
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for (c = ¤cies; *c; c = &(*c)->next)
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if ((*c)->name == name)
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return *c;
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*c = alloc_type(struct currency);
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(*c)->name = name;
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(*c)->exchange = NULL;
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(*c)->next = NULL;
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return *c;
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}
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void currency_exchange(struct currency *from, const struct currency *to,
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double rate)
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{
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struct exchange **ex;
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for (ex = &from->exchange; *ex; ex = &(*ex)->next)
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if ((*ex)->dst == to)
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yyerrorf("exchange %s -> %s is already defined",
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from->name, to->name);
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*ex = alloc_type(struct exchange);
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(*ex)->dst = to;
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(*ex)->rate = rate;
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(*ex)->next = NULL;
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}
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/* ----- Provider database ------------------------------------------------- */
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static struct provider *providers = NULL;
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struct provider *provider_lookup(const char *name)
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{
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struct provider *p;
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for (p = providers; p; p = p->next)
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if (p->name == name)
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break;
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return p;
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}
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struct provider *provider_add(const char *name)
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{
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struct provider *p;
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p = provider_lookup(name);
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if (p)
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return p;
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p = alloc_type(struct provider);
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p->name = name;
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p->curr = NULL;
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p->shipping = 0;
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p->minimum = 0;
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p->next = providers;
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providers = p;
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return p;
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}
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/* ----- Part search (by characteristics) ---------------------------------- */
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struct sel_prm_data {
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struct param *param;
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const struct part **res;
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int n_res;
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};
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static struct param *convert_vars(struct param *vars, const struct action *act)
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{
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struct param *res = NULL, **last = &res;
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convert_params(&vars, act->fields, &last);
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convert_params(&vars, act->rules, &last);
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free_vars(vars);
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return res;
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}
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/*
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* @@@ By matching fields (and not field names), we avoid having to check for
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* field compatibility. However, this also means that only fields that appear
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* in the same place in the hierarchy can be matched.
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*
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* For example, a tolerance TOL in T=R could thus never match the tolerance TOL
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* in T=C. This seems reasonable, but may need some more pondering.
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*/
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/*
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* @@@ We require all fields specified in the query to exist (and to match).
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* Could there be cases where this doesn't make sense ?
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*/
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static int params_match(const struct param *query, const struct param *part)
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{
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const struct param *q, *p;
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for (q = query; q; q = q->next) {
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for (p = part; p; p = p->next) {
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if (q->u.field != p->u.field)
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continue;
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if (compare(q->u.field->fmt, &p->value, q->op,
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&q->value))
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goto next;
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return 0;
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}
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return 0;
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next: ;
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}
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return 1;
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}
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static gboolean sel_prm_traverse(gpointer key, gpointer value, gpointer data)
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{
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struct part *p = key;
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struct sel_prm_data *d = data;
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(void) value;
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if (!params_match(d->param, p->param))
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return FALSE;
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d->res = realloc(d->res, sizeof(const struct part *)*(d->n_res+1));
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if (!d->res)
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abort();
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d->res[d->n_res++] = key;
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return FALSE;
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}
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const struct part **select_parametric(struct param *vars,
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const struct action *act)
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{
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struct sel_prm_data data = {
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.param = convert_vars(vars, act),
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.res = NULL,
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.n_res = 0,
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};
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g_tree_foreach(tree, sel_prm_traverse, (void *) &data);
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if (data.n_res)
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data.res[data.n_res] = NULL;
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return data.res;
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}
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