build-sys: move source files to subdirectory

1 files changed, 503 insertions, 0 deletions

diff --git a/src/strv.c b/src/strv.c
new file mode 100644
index 0000000000..a749096f9a
--- /dev/null
+++ b/src/strv.c
@@ -0,0 +1,503 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd 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.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+#include "util.h"
+#include "strv.h"
+
+char *strv_find(char **l, const char *name) {
+        char **i;
+
+        assert(l);
+        assert(name);
+
+        STRV_FOREACH(i, l)
+                if (streq(*i, name))
+                        return *i;
+
+        return NULL;
+}
+
+void strv_free(char **l) {
+        char **k;
+
+        if (!l)
+                return;
+
+        for (k = l; *k; k++)
+                free(*k);
+
+        free(l);
+}
+
+char **strv_copy(char **l) {
+        char **r, **k;
+
+        if (!(r = new(char*, strv_length(l)+1)))
+                return NULL;
+
+        for (k = r; *l; k++, l++)
+                if (!(*k = strdup(*l)))
+                        goto fail;
+
+        *k = NULL;
+        return r;
+
+fail:
+        for (k--, l--; k >= r; k--, l--)
+                free(*k);
+
+        return NULL;
+}
+
+unsigned strv_length(char **l) {
+        unsigned n = 0;
+
+        if (!l)
+                return 0;
+
+        for (; *l; l++)
+                n++;
+
+        return n;
+}
+
+char **strv_new_ap(const char *x, va_list ap) {
+        const char *s;
+        char **a;
+        unsigned n = 0, i = 0;
+        va_list aq;
+
+
+        if (x) {
+                n = 1;
+
+                va_copy(aq, ap);
+                while (va_arg(aq, const char*))
+                        n++;
+                va_end(aq);
+        }
+
+        if (!(a = new(char*, n+1)))
+                return NULL;
+
+        if (x) {
+                if (!(a[i] = strdup(x))) {
+                        free(a);
+                        return NULL;
+                }
+
+                i++;
+
+                while ((s = va_arg(ap, const char*))) {
+                        if (!(a[i] = strdup(s)))
+                                goto fail;
+
+                        i++;
+                }
+        }
+
+        a[i] = NULL;
+
+        return a;
+
+fail:
+
+        for (; i > 0; i--)
+                if (a[i-1])
+                        free(a[i-1]);
+
+        free(a);
+
+        return NULL;
+}
+
+char **strv_new(const char *x, ...) {
+        char **r;
+        va_list ap;
+
+        va_start(ap, x);
+        r = strv_new_ap(x, ap);
+        va_end(ap);
+
+        return r;
+}
+
+char **strv_merge(char **a, char **b) {
+        char **r, **k;
+
+        if (!a)
+                return strv_copy(b);
+
+        if (!b)
+                return strv_copy(a);
+
+        if (!(r = new(char*, strv_length(a)+strv_length(b)+1)))
+                return NULL;
+
+        for (k = r; *a; k++, a++)
+                if (!(*k = strdup(*a)))
+                        goto fail;
+        for (; *b; k++, b++)
+                if (!(*k = strdup(*b)))
+                        goto fail;
+
+        *k = NULL;
+        return r;
+
+fail:
+        for (k--; k >= r; k--)
+                free(*k);
+
+        free(r);
+
+        return NULL;
+}
+
+char **strv_merge_concat(char **a, char **b, const char *suffix) {
+        char **r, **k;
+
+        /* Like strv_merge(), but appends suffix to all strings in b, before adding */
+
+        if (!b)
+                return strv_copy(a);
+
+        if (!(r = new(char*, strv_length(a)+strv_length(b)+1)))
+                return NULL;
+
+        for (k = r; *a; k++, a++)
+                if (!(*k = strdup(*a)))
+                        goto fail;
+        for (; *b; k++, b++)
+                if (!(*k = strappend(*b, suffix)))
+                        goto fail;
+
+        *k = NULL;
+        return r;
+
+fail:
+        for (k--; k >= r; k--)
+                free(*k);
+
+        free(r);
+
+        return NULL;
+
+}
+
+char **strv_split(const char *s, const char *separator) {
+        char *state;
+        char *w;
+        size_t l;
+        unsigned n, i;
+        char **r;
+
+        assert(s);
+
+        n = 0;
+        FOREACH_WORD_SEPARATOR(w, l, s, separator, state)
+                n++;
+
+        if (!(r = new(char*, n+1)))
+                return NULL;
+
+        i = 0;
+        FOREACH_WORD_SEPARATOR(w, l, s, separator, state)
+                if (!(r[i++] = strndup(w, l))) {
+                        strv_free(r);
+                        return NULL;
+                }
+
+        r[i] = NULL;
+        return r;
+}
+
+char **strv_split_quoted(const char *s) {
+        char *state;
+        char *w;
+        size_t l;
+        unsigned n, i;
+        char **r;
+
+        assert(s);
+
+        n = 0;
+        FOREACH_WORD_QUOTED(w, l, s, state)
+                n++;
+
+        if (!(r = new(char*, n+1)))
+                return NULL;
+
+        i = 0;
+        FOREACH_WORD_QUOTED(w, l, s, state)
+                if (!(r[i++] = strndup(w, l))) {
+                        strv_free(r);
+                        return NULL;
+                }
+
+        r[i] = NULL;
+        return r;
+}
+
+char *strv_join(char **l, const char *separator) {
+        char *r, *e;
+        char **s;
+        size_t n, k;
+
+        if (!separator)
+                separator = " ";
+
+        k = strlen(separator);
+
+        n = 0;
+        STRV_FOREACH(s, l) {
+                if (n != 0)
+                        n += k;
+                n += strlen(*s);
+        }
+
+        if (!(r = new(char, n+1)))
+                return NULL;
+
+        e = r;
+        STRV_FOREACH(s, l) {
+                if (e != r)
+                        e = stpcpy(e, separator);
+
+                e = stpcpy(e, *s);
+        }
+
+        *e = 0;
+
+        return r;
+}
+
+char **strv_append(char **l, const char *s) {
+        char **r, **k;
+
+        if (!l)
+                return strv_new(s, NULL);
+
+        if (!s)
+                return strv_copy(l);
+
+        if (!(r = new(char*, strv_length(l)+2)))
+                return NULL;
+
+        for (k = r; *l; k++, l++)
+                if (!(*k = strdup(*l)))
+                        goto fail;
+
+        if (!(*(k++) = strdup(s)))
+                goto fail;
+
+        *k = NULL;
+        return r;
+
+fail:
+        for (k--; k >= r; k--)
+                free(*k);
+
+        free(r);
+
+        return NULL;
+}
+
+char **strv_uniq(char **l) {
+        char **i;
+
+        /* Drops duplicate entries. The first identical string will be
+         * kept, the others dropped */
+
+        STRV_FOREACH(i, l)
+                strv_remove(i+1, *i);
+
+        return l;
+}
+
+char **strv_remove(char **l, const char *s) {
+        char **f, **t;
+
+        if (!l)
+                return NULL;
+
+        /* Drops every occurence of s in the string list */
+
+        for (f = t = l; *f; f++) {
+
+                if (streq(*f, s)) {
+                        free(*f);
+                        continue;
+                }
+
+                *(t++) = *f;
+        }
+
+        *t = NULL;
+        return l;
+}
+
+static int env_append(char **r, char ***k, char **a) {
+        assert(r);
+        assert(k);
+        assert(a);
+
+        /* Add the entries of a to *k unless they already exist in *r
+         * in which case they are overriden instead. This assumes
+         * there is enough space in the r */
+
+        for (; *a; a++) {
+                char **j;
+                size_t n = strcspn(*a, "=") + 1;
+
+                for (j = r; j < *k; j++)
+                        if (strncmp(*j, *a, n) == 0)
+                                break;
+
+                if (j >= *k)
+                        (*k)++;
+                else
+                        free(*j);
+
+                if (!(*j = strdup(*a)))
+                        return -ENOMEM;
+        }
+
+        return 0;
+}
+
+char **strv_env_merge(char **x, ...) {
+        size_t n = 0;
+        char **l, **k, **r;
+        va_list ap;
+
+        /* Merges an arbitrary number of environment sets */
+
+        if (x) {
+                n += strv_length(x);
+
+                va_start(ap, x);
+                while ((l = va_arg(ap, char**)))
+                        n += strv_length(l);
+                va_end(ap);
+        }
+
+
+        if (!(r = new(char*, n+1)))
+                return NULL;
+
+        k = r;
+
+        if (x) {
+                if (env_append(r, &k, x) < 0)
+                        goto fail;
+
+                va_start(ap, x);
+                while ((l = va_arg(ap, char**)))
+                        if (env_append(r, &k, l) < 0)
+                                goto fail;
+                va_end(ap);
+        }
+
+        *k = NULL;
+
+        return r;
+
+fail:
+        for (k--; k >= r; k--)
+                free(*k);
+
+        free(r);
+
+        return NULL;
+}
+
+static bool env_match(const char *t, const char *pattern) {
+        assert(t);
+        assert(pattern);
+
+        /* pattern a matches string a
+         *         a matches a=
+         *         a matches a=b
+         *         a= matches a=
+         *         a=b matches a=b
+         *         a= does not match a
+         *         a=b does not match a=
+         *         a=b does not match a
+         *         a=b does not match a=c */
+
+        if (streq(t, pattern))
+                return true;
+
+        if (!strchr(pattern, '=')) {
+                size_t l = strlen(pattern);
+
+                return strncmp(t, pattern, l) == 0 && t[l] == '=';
+        }
+
+        return false;
+}
+
+char **strv_env_delete(char **x, ...) {
+        size_t n = 0, i = 0;
+        char **l, **k, **r, **j;
+        va_list ap;
+
+        /* Deletes every entry fromx that is mentioned in the other
+         * string lists */
+
+        n = strv_length(x);
+
+        if (!(r = new(char*, n+1)))
+                return NULL;
+
+        STRV_FOREACH(k, x) {
+                va_start(ap, x);
+
+                while ((l = va_arg(ap, char**)))
+                        STRV_FOREACH(j, l)
+                                if (env_match(*k, *j))
+                                        goto delete;
+
+                va_end(ap);
+
+                if (!(r[i++] = strdup(*k))) {
+                        strv_free(r);
+                        return NULL;
+                }
+
+                continue;
+
+        delete:
+                va_end(ap);
+        }
+
+        r[i] = NULL;
+
+        assert(i <= n);
+
+        return r;
+}