pkgconf/fragment.c

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/*
* fragment.c
* Management of fragment lists.
*
* Copyright (c) 2012, 2013, 2014 pkgconf authors (see AUTHORS).
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*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* This software is provided 'as is' and without any warranty, express or
* implied. In no event shall the authors be liable for any damages arising
* from the use of this software.
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*/
#include "pkg.h"
#include "bsdstubs.h"
static inline char *
pkg_fragment_copy_munged(const char *source, unsigned int flags)
{
char mungebuf[PKG_BUFSIZE];
char *sysroot_dir;
if (!(flags & PKGF_MUNGE_SYSROOT_PREFIX))
return strdup(source);
sysroot_dir = pkg_tuple_find_global("pc_sysrootdir");
if (*source != '/' ||
(sysroot_dir != NULL && !strncmp(sysroot_dir, source, strlen(sysroot_dir))))
return strdup(source);
strlcpy(mungebuf, sysroot_dir, sizeof mungebuf);
strlcat(mungebuf, source, sizeof mungebuf);
return strdup(mungebuf);
}
void
pkg_fragment_add(pkg_list_t *list, const char *string, unsigned int flags)
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{
pkg_fragment_t *frag;
if (*string == '-' && strncmp(string, "-lib:", 5) && strncmp(string, "-framework", 10))
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{
frag = calloc(sizeof(pkg_fragment_t), 1);
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frag->type = *(string + 1);
frag->data = pkg_fragment_copy_munged(string + 2, flags);
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}
else
{
if (list->tail != NULL && list->tail->data != NULL)
{
pkg_fragment_t *parent = list->tail->data;
if (!strncmp(parent->data, "-framework", 10))
{
size_t len = strlen(parent->data) + strlen(string) + 2;
char *newdata;
newdata = malloc(len);
strlcpy(newdata, parent->data, len);
strlcat(newdata, " ", len);
strlcat(newdata, string, len);
free(parent->data);
parent->data = newdata;
return;
}
}
frag = calloc(sizeof(pkg_fragment_t), 1);
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frag->type = 0;
frag->data = strdup(string);
}
pkg_node_insert_tail(&frag->iter, frag, list);
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}
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static inline pkg_fragment_t *
pkg_fragment_lookup(pkg_list_t *list, pkg_fragment_t *base)
{
pkg_node_t *node;
PKG_FOREACH_LIST_ENTRY(list->head, node)
{
pkg_fragment_t *frag = node->data;
if (base->type != frag->type)
continue;
if (!strcmp(base->data, frag->data))
return frag;
}
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return NULL;
}
static inline bool
pkg_fragment_can_merge_back(pkg_fragment_t *base, unsigned int flags)
{
if ((flags & PKGF_MERGE_PRIVATE_FRAGMENTS) && base->type == 'l')
return false;
if (base->type == 'F')
return false;
return true;
}
static inline bool
pkg_fragment_can_merge(pkg_fragment_t *base, unsigned int flags)
{
(void) flags;
if (!strncmp(base->data, "-framework", 10))
return false;
return true;
}
static inline pkg_fragment_t *
pkg_fragment_exists(pkg_list_t *list, pkg_fragment_t *base, unsigned int flags)
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{
if (!pkg_fragment_can_merge_back(base, flags))
return NULL;
if (!pkg_fragment_can_merge(base, flags))
return NULL;
return pkg_fragment_lookup(list, base);
}
void
pkg_fragment_copy(pkg_list_t *list, pkg_fragment_t *base, unsigned int flags)
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{
pkg_fragment_t *frag;
if ((frag = pkg_fragment_exists(list, base, flags)) != NULL)
pkg_fragment_delete(list, frag);
else if (!pkg_fragment_can_merge_back(base, flags) && (pkg_fragment_lookup(list, base) != NULL))
return;
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frag = calloc(sizeof(pkg_fragment_t), 1);
frag->type = base->type;
frag->data = strdup(base->data);
pkg_node_insert_tail(&frag->iter, frag, list);
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}
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void
pkg_fragment_delete(pkg_list_t *list, pkg_fragment_t *node)
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{
pkg_node_delete(&node->iter, list);
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free(node->data);
free(node);
}
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void
pkg_fragment_free(pkg_list_t *list)
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{
pkg_node_t *node, *next;
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PKG_FOREACH_LIST_ENTRY_SAFE(list->head, next, node)
{
pkg_fragment_t *frag = node->data;
free(frag->data);
free(frag);
}
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}
void
pkg_fragment_parse(pkg_list_t *list, pkg_list_t *vars, const char *value, unsigned int flags)
{
int i, argc;
char **argv;
char *repstr = pkg_tuple_parse(vars, value);
pkg_argv_split(repstr, &argc, &argv);
for (i = 0; i < argc; i++)
pkg_fragment_add(list, argv[i], flags);
pkg_argv_free(argv);
free(repstr);
}