pkgconf/libpkgconf/pkg.c

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2011-07-25 02:03:17 +00:00
/*
* pkg.c
* higher-level dependency graph compilation, management and manipulation
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*
* Copyright (c) 2011, 2012, 2013 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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*/
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#include <libpkgconf/libpkgconf.h>
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static pkgconf_error_handler_func_t pkgconf_error_handler = pkgconf_default_error_handler;
bool
pkgconf_error(const char *format, ...)
{
char errbuf[PKGCONF_BUFSIZE];
va_list va;
va_start(va, format);
vsnprintf(errbuf, sizeof errbuf, format, va);
va_end(va);
return pkgconf_error_handler(errbuf);
}
bool
pkgconf_default_error_handler(const char *msg)
{
(void) msg;
return true;
}
void
pkgconf_set_error_handler(pkgconf_error_handler_func_t func)
{
pkgconf_error_handler = func;
}
#ifdef _WIN32
# define PKG_CONFIG_REG_KEY "Software\\pkgconfig\\PKG_CONFIG_PATH"
# undef PKG_DEFAULT_PATH
# define PKG_DEFAULT_PATH "../lib/pkgconfig;../share/pkgconfig"
#endif
#define PKG_CONFIG_EXT ".pc"
#define PKG_CONFIG_PATH_SZ (65535)
/* pkg-config uses ';' on win32 as ':' is part of path */
#ifdef _WIN32
#define PKG_CONFIG_PATH_SEP_S ";"
#else
#define PKG_CONFIG_PATH_SEP_S ":"
#endif
#ifdef _WIN32
#define PKG_DIR_SEP_S '\\'
#else
#define PKG_DIR_SEP_S '/'
#endif
typedef struct {
char *path;
pkgconf_node_t node;
} pkg_path_t;
static inline void
path_add(const char *text, pkgconf_list_t *dirlist)
{
pkg_path_t *pkg_path;
pkg_path = calloc(sizeof(pkg_path_t), 1);
pkg_path->path = strdup(text);
pkgconf_node_insert_tail(&pkg_path->node, pkg_path, dirlist);
}
static inline size_t
path_split(const char *text, pkgconf_list_t *dirlist)
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{
size_t count = 0;
char *workbuf, *p, *iter;
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if (text == NULL)
return 0;
iter = workbuf = strdup(text);
while ((p = strtok(iter, PKG_CONFIG_PATH_SEP_S)) != NULL)
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{
path_add(p, dirlist);
count++, iter = NULL;
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}
free(workbuf);
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return count;
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}
static inline bool
str_has_suffix(const char *str, const char *suffix)
{
size_t str_len = strlen(str);
size_t suf_len = strlen(suffix);
if (str_len < suf_len)
return false;
return !strncasecmp(str + str_len - suf_len, suffix, suf_len);
}
static inline const char *
get_pkgconfig_path(void)
{
const char *env_path;
#ifdef _WIN32
static char outbuf[MAX_PATH];
char namebuf[MAX_PATH];
char *p;
#endif
env_path = getenv("PKG_CONFIG_LIBDIR");
if (env_path != NULL)
return env_path;
#ifdef _WIN32
int sizepath = GetModuleFileName(NULL, namebuf, sizeof namebuf);
char * winslash;
namebuf[sizepath] = '\0';
while ((winslash = strchr (namebuf, '\\')) != NULL)
{
*winslash = '/';
}
p = strrchr(namebuf, '/');
if (p == NULL)
return PKG_DEFAULT_PATH;
*p = '\0';
strlcpy(outbuf, namebuf, sizeof outbuf);
strlcat(outbuf, "/", sizeof outbuf);
strlcat(outbuf, "../lib/pkgconfig", sizeof outbuf);
strlcat(outbuf, ";", sizeof outbuf);
strlcat(outbuf, namebuf, sizeof outbuf);
strlcat(outbuf, "/", sizeof outbuf);
strlcat(outbuf, "../share/pkgconfig", sizeof outbuf);
return outbuf;
#endif
return PKG_DEFAULT_PATH;
}
static const char *
pkg_get_parent_dir(pkgconf_pkg_t *pkg)
{
static char buf[PKGCONF_BUFSIZE];
char *pathbuf;
strlcpy(buf, pkg->filename, sizeof buf);
pathbuf = strrchr(buf, PKG_DIR_SEP_S);
if (pathbuf == NULL)
pathbuf = strrchr(buf, '/');
if (pathbuf != NULL)
pathbuf[0] = '\0';
return buf;
}
static pkgconf_list_t pkg_dir_list = PKGCONF_LIST_INITIALIZER;
static void
pkgconf_pkg_dir_list_build(unsigned int flags)
{
const char *env_path;
if (pkg_dir_list.head != NULL || pkg_dir_list.tail != NULL)
return;
/* PKG_CONFIG_PATH has to take precedence */
env_path = getenv("PKG_CONFIG_PATH");
if (env_path)
path_split(env_path, &pkg_dir_list);
if (!(flags & PKGCONF_PKG_PKGF_ENV_ONLY))
{
env_path = get_pkgconfig_path();
path_split(env_path, &pkg_dir_list);
}
}
/*
* pkgconf_pkg_new_from_file(filename, file, flags)
*
* Parse a .pc file into a pkgconf_pkg_t object structure.
*/
pkgconf_pkg_t *
pkgconf_pkg_new_from_file(const char *filename, FILE *f, unsigned int flags)
{
pkgconf_pkg_t *pkg;
char readbuf[PKGCONF_BUFSIZE];
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char *idptr;
pkg = calloc(sizeof(pkgconf_pkg_t), 1);
pkg->filename = strdup(filename);
pkgconf_tuple_add(&pkg->vars, "pcfiledir", pkg_get_parent_dir(pkg));
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/* make module id */
if ((idptr = strrchr(pkg->filename, PKG_DIR_SEP_S)) != NULL)
idptr++;
else
idptr = pkg->filename;
pkg->id = strdup(idptr);
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idptr = strrchr(pkg->id, '.');
if (idptr)
*idptr = '\0';
while (pkgconf_fgetline(readbuf, PKGCONF_BUFSIZE, f) != NULL)
{
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char op, *p, *key, *value;
p = readbuf;
while (*p && (isalpha(*p) || isdigit(*p) || *p == '_' || *p == '.'))
p++;
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key = readbuf;
if (!isalpha(*key) && !isdigit(*p))
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continue;
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while (*p && isspace(*p)) {
/* set to null to avoid trailing spaces in key */
*p = '\0';
p++;
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}
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op = *p;
*p = '\0';
p++;
while (*p && isspace(*p))
p++;
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value = p;
switch (op)
{
case ':':
if (!strcmp(key, "Name"))
pkg->realname = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcmp(key, "Description"))
pkg->description = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcmp(key, "Version"))
pkg->version = pkgconf_tuple_parse(&pkg->vars, value);
else if (!strcasecmp(key, "CFLAGS"))
pkgconf_fragment_parse(&pkg->cflags, &pkg->vars, value, flags);
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else if (!strcasecmp(key, "CFLAGS.private"))
pkgconf_fragment_parse(&pkg->cflags_private, &pkg->vars, value, flags);
else if (!strcasecmp(key, "LIBS"))
pkgconf_fragment_parse(&pkg->libs, &pkg->vars, value, flags);
else if (!strcasecmp(key, "LIBS.private"))
pkgconf_fragment_parse(&pkg->libs_private, &pkg->vars, value, flags);
else if (!strcmp(key, "Requires"))
pkgconf_dependency_parse(pkg, &pkg->requires, value);
else if (!strcmp(key, "Requires.private"))
pkgconf_dependency_parse(pkg, &pkg->requires_private, value);
else if (!strcmp(key, "Conflicts"))
pkgconf_dependency_parse(pkg, &pkg->conflicts, value);
break;
case '=':
pkgconf_tuple_add(&pkg->vars, key, value);
break;
default:
break;
}
}
fclose(f);
return pkgconf_pkg_ref(pkg);
}
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void
pkgconf_pkg_free(pkgconf_pkg_t *pkg)
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{
if (pkg == NULL || pkg->flags & PKGCONF_PKG_PROPF_VIRTUAL)
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return;
pkgconf_cache_remove(pkg);
pkgconf_dependency_free(&pkg->requires);
pkgconf_dependency_free(&pkg->requires_private);
pkgconf_dependency_free(&pkg->conflicts);
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pkgconf_fragment_free(&pkg->cflags);
pkgconf_fragment_free(&pkg->cflags_private);
pkgconf_fragment_free(&pkg->libs);
pkgconf_fragment_free(&pkg->libs_private);
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pkgconf_tuple_free(&pkg->vars);
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if (pkg->id != NULL)
free(pkg->id);
if (pkg->filename != NULL)
free(pkg->filename);
if (pkg->realname != NULL)
free(pkg->realname);
if (pkg->version != NULL)
free(pkg->version);
if (pkg->description != NULL)
free(pkg->description);
if (pkg->url != NULL)
free(pkg->url);
if (pkg->pc_filedir != NULL)
free(pkg->pc_filedir);
free(pkg);
}
pkgconf_pkg_t *
pkgconf_pkg_ref(pkgconf_pkg_t *pkg)
{
pkg->refcount++;
return pkg;
}
void
pkgconf_pkg_unref(pkgconf_pkg_t *pkg)
{
pkg->refcount--;
if (pkg->refcount <= 0)
pkgconf_pkg_free(pkg);
}
static inline pkgconf_pkg_t *
pkgconf_pkg_try_specific_path(const char *path, const char *name, unsigned int flags)
{
pkgconf_pkg_t *pkg = NULL;
FILE *f;
char locbuf[PKG_CONFIG_PATH_SZ];
char uninst_locbuf[PKG_CONFIG_PATH_SZ];
snprintf(locbuf, sizeof locbuf, "%s/%s" PKG_CONFIG_EXT, path, name);
snprintf(uninst_locbuf, sizeof uninst_locbuf, "%s/%s-uninstalled" PKG_CONFIG_EXT, path, name);
if (!(flags & PKGCONF_PKG_PKGF_NO_UNINSTALLED) && (f = fopen(uninst_locbuf, "r")) != NULL)
{
pkg = pkgconf_pkg_new_from_file(uninst_locbuf, f, flags);
pkg->flags |= PKGCONF_PKG_PROPF_UNINSTALLED;
}
else if ((f = fopen(locbuf, "r")) != NULL)
pkg = pkgconf_pkg_new_from_file(locbuf, f, flags);
return pkg;
}
static void
pkgconf_pkg_scan_dir(const char *path, pkgconf_pkg_iteration_func_t func)
{
DIR *dir;
struct dirent *dirent;
dir = opendir(path);
if (dir == NULL)
return;
for (dirent = readdir(dir); dirent != NULL; dirent = readdir(dir))
{
static char filebuf[PKGCONF_BUFSIZE];
pkgconf_pkg_t *pkg;
FILE *f;
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struct stat st;
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strlcpy(filebuf, path, sizeof filebuf);
strlcat(filebuf, "/", sizeof filebuf);
strlcat(filebuf, dirent->d_name, sizeof filebuf);
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stat(filebuf, &st);
if (!(S_ISREG(st.st_mode)))
continue;
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f = fopen(filebuf, "r");
if (f == NULL)
continue;
pkg = pkgconf_pkg_new_from_file(filebuf, f, 0);
if (pkg != NULL)
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{
func(pkg);
pkgconf_pkg_unref(pkg);
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}
}
closedir(dir);
}
void
pkgconf_scan_all(pkgconf_pkg_iteration_func_t func)
{
pkgconf_node_t *n;
pkgconf_pkg_dir_list_build(0);
PKGCONF_FOREACH_LIST_ENTRY(pkg_dir_list.head, n)
{
pkg_path_t *pkg_path = n->data;
pkgconf_pkg_scan_dir(pkg_path->path, func);
}
}
#ifdef _WIN32
pkgconf_pkg_t *
pkgconf_pkg_find_in_registry_key(HKEY hkey, const char *name, unsigned int flags)
{
pkgconf_pkg_t *pkg = NULL;
HKEY key;
int i = 0;
char buf[16384]; /* per registry limits */
DWORD bufsize = sizeof buf;
if (RegOpenKeyEx(hkey, PKG_CONFIG_REG_KEY,
0, KEY_READ, &key) != ERROR_SUCCESS)
return NULL;
while (RegEnumValue(key, i++, buf, &bufsize, NULL, NULL, NULL, NULL)
== ERROR_SUCCESS)
{
char pathbuf[PKG_CONFIG_PATH_SZ];
DWORD type;
DWORD pathbuflen = sizeof pathbuf;
if (RegQueryValueEx(key, buf, NULL, &type, (LPBYTE) pathbuf, &pathbuflen)
== ERROR_SUCCESS && type == REG_SZ)
{
pkg = pkgconf_pkg_try_specific_path(pathbuf, name, flags);
if (pkg != NULL)
break;
}
bufsize = sizeof buf;
}
RegCloseKey(key);
return pkg;
}
#endif
pkgconf_pkg_t *
pkgconf_pkg_find(const char *name, unsigned int flags)
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{
pkgconf_pkg_t *pkg = NULL;
pkgconf_node_t *n;
FILE *f;
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pkgconf_pkg_dir_list_build(flags);
/* name might actually be a filename. */
if (str_has_suffix(name, PKG_CONFIG_EXT))
{
if ((f = fopen(name, "r")) != NULL)
{
pkgconf_pkg_t *pkg;
pkg = pkgconf_pkg_new_from_file(name, f, flags);
path_add(pkg_get_parent_dir(pkg), &pkg_dir_list);
return pkg;
}
}
/* check cache */
if (!(flags & PKGCONF_PKG_PKGF_NO_CACHE))
{
if ((pkg = pkgconf_cache_lookup(name)) != NULL)
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{
pkg->flags |= PKGCONF_PKG_PROPF_CACHED;
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return pkg;
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}
}
PKGCONF_FOREACH_LIST_ENTRY(pkg_dir_list.head, n)
{
pkg_path_t *pkg_path = n->data;
pkg = pkgconf_pkg_try_specific_path(pkg_path->path, name, flags);
if (pkg != NULL)
goto out;
}
#ifdef _WIN32
/* support getting PKG_CONFIG_PATH from registry */
pkg = pkgconf_pkg_find_in_registry_key(HKEY_CURRENT_USER, name, flags);
if (!pkg)
pkg = pkgconf_pkg_find_in_registry_key(HKEY_LOCAL_MACHINE, name, flags);
#endif
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out:
pkgconf_cache_add(pkg);
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return pkg;
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}
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/*
* pkgconf_compare_version(a, b)
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*
* compare versions using RPM version comparison rules as described in the LSB.
*/
int
pkgconf_compare_version(const char *a, const char *b)
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{
char oldch1, oldch2;
char buf1[PKGCONF_BUFSIZE], buf2[PKGCONF_BUFSIZE];
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char *str1, *str2;
char *one, *two;
int ret;
bool isnum;
/* optimization: if version matches then it's the same version. */
if (!strcasecmp(a, b))
return 0;
strlcpy(buf1, a, sizeof buf1);
strlcpy(buf2, b, sizeof buf2);
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one = str1 = buf1;
two = str2 = buf2;
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while (*one || *two)
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{
while (*one && !isalnum(*one) && *one != '~')
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one++;
while (*two && !isalnum(*two) && *two != '~')
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two++;
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if (*one == '~' || *two == '~')
{
if (*one != '~')
return -1;
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if (*two != '~')
return 1;
one++;
two++;
continue;
}
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if (!(*one && *two))
break;
str1 = one;
str2 = two;
if (isdigit(*str1))
{
while (*str1 && isdigit(*str1))
str1++;
while (*str2 && isdigit(*str2))
str2++;
isnum = true;
}
else
{
while (*str1 && isalpha(*str1))
str1++;
while (*str2 && isalpha(*str2))
str2++;
isnum = false;
}
oldch1 = *str1;
oldch2 = *str2;
*str1 = '\0';
*str2 = '\0';
if (one == str1)
return -1;
if (two == str2)
return (isnum ? 1 : -1);
if (isnum)
{
int onelen, twolen;
while (*one == '0')
one++;
while (*two == '0')
two++;
onelen = strlen(one);
twolen = strlen(two);
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if (onelen > twolen)
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return 1;
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else if (twolen > onelen)
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return -1;
}
ret = strcmp(one, two);
if (ret)
return ret;
*str1 = oldch1;
*str2 = oldch2;
one = str1;
two = str2;
}
if ((!*one) && (!*two))
return 0;
if (!*one)
return -1;
return 1;
}
static pkgconf_pkg_t pkg_config_virtual = {
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.id = "pkg-config",
.realname = "pkg-config",
.description = "virtual package defining pkg-config API version supported",
.url = PACKAGE_BUGREPORT,
.version = PACKAGE_VERSION,
.flags = PKGCONF_PKG_PROPF_VIRTUAL,
.vars = {
.head = &(pkgconf_node_t){
.prev = NULL,
.next = NULL,
.data = &(pkgconf_tuple_t){
.key = "pc_path",
.value = PKG_DEFAULT_PATH,
},
},
.tail = NULL,
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},
};
typedef bool (*pkgconf_vercmp_res_func_t)(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep);
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typedef struct {
const char *name;
pkgconf_pkg_comparator_t compare;
} pkgconf_pkg_comparator_name_t;
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static pkgconf_pkg_comparator_name_t pkgconf_pkg_comparator_names[PKGCONF_CMP_SIZE + 1] = {
{"<", PKGCONF_CMP_LESS_THAN},
{">", PKGCONF_CMP_GREATER_THAN},
{"<=", PKGCONF_CMP_LESS_THAN_EQUAL},
{">=", PKGCONF_CMP_GREATER_THAN_EQUAL},
{"=", PKGCONF_CMP_EQUAL},
{"!=", PKGCONF_CMP_NOT_EQUAL},
{"(any)", PKGCONF_CMP_ANY},
{"???", PKGCONF_CMP_SIZE},
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};
static bool pkgconf_pkg_comparator_lt(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) < 0);
}
static bool pkgconf_pkg_comparator_gt(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) > 0);
}
static bool pkgconf_pkg_comparator_lte(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) <= 0);
}
static bool pkgconf_pkg_comparator_gte(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) >= 0);
}
static bool pkgconf_pkg_comparator_eq(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) == 0);
}
static bool pkgconf_pkg_comparator_ne(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
return (pkgconf_compare_version(pkg->version, pkgdep->version) != 0);
}
static bool pkgconf_pkg_comparator_any(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
(void) pkg;
(void) pkgdep;
return true;
}
static bool pkgconf_pkg_comparator_unimplemented(pkgconf_pkg_t *pkg, pkgconf_dependency_t *pkgdep)
{
(void) pkg;
(void) pkgdep;
return false;
}
static pkgconf_vercmp_res_func_t pkgconf_pkg_comparator_impls[PKGCONF_CMP_SIZE + 1] = {
[PKGCONF_CMP_ANY] = pkgconf_pkg_comparator_any,
[PKGCONF_CMP_LESS_THAN] = pkgconf_pkg_comparator_lt,
[PKGCONF_CMP_GREATER_THAN] = pkgconf_pkg_comparator_gt,
[PKGCONF_CMP_LESS_THAN_EQUAL] = pkgconf_pkg_comparator_lte,
[PKGCONF_CMP_GREATER_THAN_EQUAL] = pkgconf_pkg_comparator_gte,
[PKGCONF_CMP_EQUAL] = pkgconf_pkg_comparator_eq,
[PKGCONF_CMP_NOT_EQUAL] = pkgconf_pkg_comparator_ne,
[PKGCONF_CMP_SIZE] = pkgconf_pkg_comparator_unimplemented,
};
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/*
* pkgconf_pkg_get_comparator(pkgdep)
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*
* returns the comparator used in a depgraph dependency node as a string.
*/
const char *
pkgconf_pkg_get_comparator(pkgconf_dependency_t *pkgdep)
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{
const pkgconf_pkg_comparator_name_t *i;
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for (i = pkgconf_pkg_comparator_names; i->compare != PKGCONF_CMP_SIZE; i++)
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{
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if (i->compare == pkgdep->compare)
return i->name;
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}
return "???";
}
/*
* pkgconf_pkg_comparator_lookup_by_name(name)
*
* look up the appropriate comparator bytecode in the comparator set (defined
* above, see pkgconf_pkg_comparator_names and pkgconf_pkg_comparator_impls).
*
* XXX: on error return PKGCONF_CMP_ANY or maybe we should return PKGCONF_CMP_SIZE which
* is poisoned?
*/
pkgconf_pkg_comparator_t
pkgconf_pkg_comparator_lookup_by_name(const char *name)
{
const pkgconf_pkg_comparator_name_t *i;
for (i = pkgconf_pkg_comparator_names; i->compare != PKGCONF_CMP_SIZE; i++)
{
if (!strcmp(i->name, name))
return i->compare;
}
return PKGCONF_CMP_ANY;
}
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/*
* pkg_verify_dependency(pkgdep, flags)
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*
* verify a pkgconf_dependency_t node in the depgraph. if the dependency is solvable,
* return the appropriate pkgconf_pkg_t object, else NULL.
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*/
pkgconf_pkg_t *
pkgconf_pkg_verify_dependency(pkgconf_dependency_t *pkgdep, unsigned int flags, unsigned int *eflags)
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{
pkgconf_pkg_t *pkg = &pkg_config_virtual;
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if (eflags != NULL)
*eflags = PKGCONF_PKG_ERRF_OK;
/* pkg-config package name is special cased. */
if (strcasecmp(pkgdep->package, "pkg-config"))
{
pkg = pkgconf_pkg_find(pkgdep->package, flags);
if (pkg == NULL)
{
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND;
return NULL;
}
}
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if (pkg->id == NULL)
pkg->id = strdup(pkgdep->package);
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if (pkgconf_pkg_comparator_impls[pkgdep->compare](pkg, pkgdep) == true)
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return pkg;
if (eflags != NULL)
*eflags |= PKGCONF_PKG_ERRF_PACKAGE_VER_MISMATCH;
return pkg;
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}
/*
* pkg_verify_graph(root, depth)
*
* verify the graph dependency nodes are satisfiable by walking the tree using
* pkgconf_pkg_traverse().
*/
unsigned int
pkgconf_pkg_verify_graph(pkgconf_pkg_t *root, int depth, unsigned int flags)
{
return pkgconf_pkg_traverse(root, NULL, NULL, depth, flags);
}
static unsigned int
pkgconf_pkg_report_graph_error(pkgconf_pkg_t *parent, pkgconf_pkg_t *pkg, pkgconf_dependency_t *node, unsigned int eflags)
{
static bool already_sent_notice = false;
if (eflags & PKGCONF_PKG_ERRF_PACKAGE_NOT_FOUND)
{
if (!already_sent_notice)
{
pkgconf_error("Package %s was not found in the pkg-config search path.\n", node->package);
pkgconf_error("Perhaps you should add the directory containing `%s.pc'\n", node->package);
pkgconf_error("to the PKG_CONFIG_PATH environment variable\n");
already_sent_notice = true;
}
pkgconf_error("Package '%s', required by '%s', not found\n", node->package, parent->id);
}
else if (eflags & PKGCONF_PKG_ERRF_PACKAGE_VER_MISMATCH)
{
pkgconf_error("Package dependency requirement '%s %s %s' could not be satisfied.\n",
node->package, pkgconf_pkg_get_comparator(node), node->version);
if (pkg != NULL)
pkgconf_error("Package '%s' has version '%s', required version is '%s %s'\n",
node->package, pkg->version, pkgconf_pkg_get_comparator(node), node->version);
}
if (pkg != NULL)
pkgconf_pkg_unref(pkg);
return eflags;
}
static inline unsigned int
pkgconf_pkg_walk_list(pkgconf_pkg_t *parent,
pkgconf_list_t *deplist,
pkgconf_pkg_traverse_func_t func,
void *data,
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int depth,
unsigned int flags)
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{
unsigned int eflags = PKGCONF_PKG_ERRF_OK;
pkgconf_node_t *node;
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PKGCONF_FOREACH_LIST_ENTRY(deplist->head, node)
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{
unsigned int eflags_local = PKGCONF_PKG_ERRF_OK;
pkgconf_dependency_t *depnode = node->data;
pkgconf_pkg_t *pkgdep;
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if (*depnode->package == '\0')
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continue;
pkgdep = pkgconf_pkg_verify_dependency(depnode, flags, &eflags_local);
eflags |= eflags_local;
if (eflags_local != PKGCONF_PKG_ERRF_OK && !(flags & PKGCONF_PKG_PKGF_SKIP_ERRORS))
{
pkgconf_pkg_report_graph_error(parent, pkgdep, depnode, eflags_local);
continue;
}
if (pkgdep == NULL)
continue;
if (pkgdep->flags & PKGCONF_PKG_PROPF_SEEN)
{
pkgconf_pkg_unref(pkgdep);
continue;
}
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pkgdep->flags |= PKGCONF_PKG_PROPF_SEEN;
eflags |= pkgconf_pkg_traverse(pkgdep, func, data, depth - 1, flags);
pkgdep->flags &= ~PKGCONF_PKG_PROPF_SEEN;
pkgconf_pkg_unref(pkgdep);
}
return eflags;
}
static inline unsigned int
pkgconf_pkg_walk_conflicts_list(pkgconf_pkg_t *root, pkgconf_list_t *deplist, unsigned int flags)
{
unsigned int eflags;
pkgconf_node_t *node, *childnode;
PKGCONF_FOREACH_LIST_ENTRY(deplist->head, node)
{
pkgconf_dependency_t *parentnode = node->data;
if (*parentnode->package == '\0')
continue;
PKGCONF_FOREACH_LIST_ENTRY(root->requires.head, childnode)
{
pkgconf_pkg_t *pkgdep;
pkgconf_dependency_t *depnode = childnode->data;
if (*depnode->package == '\0' || strcmp(depnode->package, parentnode->package))
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continue;
pkgdep = pkgconf_pkg_verify_dependency(parentnode, flags, &eflags);
if (eflags == PKGCONF_PKG_ERRF_OK)
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{
pkgconf_error("Version '%s' of '%s' conflicts with '%s' due to satisfying conflict rule '%s %s%s%s'.\n",
pkgdep->version, pkgdep->realname, root->realname, parentnode->package, pkgconf_pkg_get_comparator(parentnode),
parentnode->version != NULL ? " " : "", parentnode->version != NULL ? parentnode->version : "");
pkgconf_error("It may be possible to ignore this conflict and continue, try the\n");
pkgconf_error("PKG_CONFIG_IGNORE_CONFLICTS environment variable.\n");
pkgconf_pkg_unref(pkgdep);
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return PKGCONF_PKG_ERRF_PACKAGE_CONFLICT;
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}
pkgconf_pkg_unref(pkgdep);
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}
}
return PKGCONF_PKG_ERRF_OK;
}
/*
* pkgconf_pkg_traverse(root, func, data, maxdepth, flags)
*
* walk the dependency graph up to maxdepth levels. -1 means infinite recursion.
*/
unsigned int
pkgconf_pkg_traverse(pkgconf_pkg_t *root,
pkgconf_pkg_traverse_func_t func,
void *data,
int maxdepth,
unsigned int flags)
{
unsigned int rflags = flags & ~PKGCONF_PKG_PKGF_SKIP_ROOT_VIRTUAL;
unsigned int eflags = PKGCONF_PKG_ERRF_OK;
if (maxdepth == 0)
return eflags;
if ((root->flags & PKGCONF_PKG_PROPF_VIRTUAL) != PKGCONF_PKG_PROPF_VIRTUAL || (flags & PKGCONF_PKG_PKGF_SKIP_ROOT_VIRTUAL) != PKGCONF_PKG_PKGF_SKIP_ROOT_VIRTUAL)
{
if (func != NULL)
func(root, data, flags);
}
if (!(flags & PKGCONF_PKG_PKGF_SKIP_CONFLICTS))
{
eflags = pkgconf_pkg_walk_conflicts_list(root, &root->conflicts, rflags);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
eflags = pkgconf_pkg_walk_list(root, &root->requires, func, data, maxdepth, rflags);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
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if (flags & PKGCONF_PKG_PKGF_SEARCH_PRIVATE)
{
eflags = pkgconf_pkg_walk_list(root, &root->requires_private, func, data, maxdepth, rflags | PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE);
if (eflags != PKGCONF_PKG_ERRF_OK)
return eflags;
}
return eflags;
}
static void
pkgconf_pkg_cflags_collect(pkgconf_pkg_t *pkg, void *data, unsigned int flags)
{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
(void) flags;
PKGCONF_FOREACH_LIST_ENTRY(pkg->cflags.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(list, frag, flags, false);
}
}
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static void
pkgconf_pkg_cflags_private_collect(pkgconf_pkg_t *pkg, void *data, unsigned int flags)
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{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
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(void) flags;
PKGCONF_FOREACH_LIST_ENTRY(pkg->cflags_private.head, node)
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{
pkgconf_fragment_t *frag = node->data;
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pkgconf_fragment_copy(list, frag, flags, true);
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}
}
int
pkgconf_pkg_cflags(pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth, unsigned int flags)
{
int eflag;
eflag = pkgconf_pkg_traverse(root, pkgconf_pkg_cflags_collect, list, maxdepth, flags);
if (eflag != PKGCONF_PKG_ERRF_OK)
pkgconf_fragment_free(list);
if (flags & PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS)
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{
eflag = pkgconf_pkg_traverse(root, pkgconf_pkg_cflags_private_collect, list, maxdepth, flags);
if (eflag != PKGCONF_PKG_ERRF_OK)
pkgconf_fragment_free(list);
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}
return eflag;
}
static void
pkgconf_pkg_libs_collect(pkgconf_pkg_t *pkg, void *data, unsigned int flags)
{
pkgconf_list_t *list = data;
pkgconf_node_t *node;
(void) flags;
PKGCONF_FOREACH_LIST_ENTRY(pkg->libs.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(list, frag, flags, (flags & PKGCONF_PKG_PKGF_ITER_PKG_IS_PRIVATE) != 0);
}
if (flags & PKGCONF_PKG_PKGF_MERGE_PRIVATE_FRAGMENTS)
{
PKGCONF_FOREACH_LIST_ENTRY(pkg->libs_private.head, node)
{
pkgconf_fragment_t *frag = node->data;
pkgconf_fragment_copy(list, frag, flags, true);
}
}
}
int
pkgconf_pkg_libs(pkgconf_pkg_t *root, pkgconf_list_t *list, int maxdepth, unsigned int flags)
{
int eflag;
eflag = pkgconf_pkg_traverse(root, pkgconf_pkg_libs_collect, list, maxdepth, flags);
if (eflag != PKGCONF_PKG_ERRF_OK)
{
pkgconf_fragment_free(list);
return eflag;
}
return eflag;
}