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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-11-22 11:01:09 +0100
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-11-22 11:28:23 +0100
commiteafaffa0f09b7c22eed906ef5356b1460d44da55 (patch)
treee77a1c3ddf714301b93810c2d123b6a7fcdc2ee8 /lib/compat
parent435c9ef3de5797d7c49fa8fae12a02fd6bd209d6 (diff)
Cleanup: move all the compatibillity fluff to a dedicated "libcompat"
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/compat')
-rw-r--r--lib/compat/Makemodule.am4
-rw-r--r--lib/compat/getline.c50
-rw-r--r--lib/compat/getsubopt.c45
-rw-r--r--lib/compat/strndup.c31
4 files changed, 130 insertions, 0 deletions
diff --git a/lib/compat/Makemodule.am b/lib/compat/Makemodule.am
new file mode 100644
index 0000000..c197fb0
--- /dev/null
+++ b/lib/compat/Makemodule.am
@@ -0,0 +1,4 @@
+libcompat_a_SOURCES = lib/compat/getline.c lib/compat/getsubopt.c
+libcompat_a_SOURCES += lib/compat/strndup.c include/compat.h
+
+noinst_LIBRARIES += libcompat.a
diff --git a/lib/compat/getline.c b/lib/compat/getline.c
new file mode 100644
index 0000000..f330c6d
--- /dev/null
+++ b/lib/compat/getline.c
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * getline.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "compat.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifndef HAVE_GETLINE
+ssize_t getline(char **line, size_t *n, FILE *fp)
+{
+ size_t new_cap, len = 0, cap = 0;
+ char *buffer = NULL, *new;
+ int c;
+
+ if (feof(fp) || ferror(fp))
+ return -1;
+
+ do {
+ c = fgetc(fp);
+
+ if (ferror(fp))
+ return -1;
+
+ if (c == EOF)
+ c = '\n';
+
+ if (len == cap) {
+ new_cap = cap ? cap * 2 : 32;
+ new = realloc(buffer, new_cap);
+
+ if (new == NULL)
+ return -1;
+
+ buffer = new;
+ cap = new_cap;
+ }
+
+ buffer[len++] = c;
+ } while (c != '\n');
+
+ *line = buffer;
+ *n = len;
+ return len;
+}
+#endif
diff --git a/lib/compat/getsubopt.c b/lib/compat/getsubopt.c
new file mode 100644
index 0000000..d53a37d
--- /dev/null
+++ b/lib/compat/getsubopt.c
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * getsubopt.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "compat.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef HAVE_GETSUBOPT
+int getsubopt(char **opt, char *const *keys, char **val)
+{
+ char *str = *opt;
+ size_t i, len;
+
+ *val = NULL;
+ *opt = strchr(str, ',');
+
+ if (*opt == NULL) {
+ *opt = str + strlen(str);
+ } else {
+ *(*opt)++ = '\0';
+ }
+
+ for (i = 0; keys[i]; ++i) {
+ len = strlen(keys[i]);
+
+ if (strncmp(keys[i], str, len) != 0)
+ continue;
+
+ if (str[len] != '=' && str[len] != '\0')
+ continue;
+
+ if (str[len] == '=')
+ *val = str + len + 1;
+
+ return i;
+ }
+
+ return -1;
+}
+#endif
diff --git a/lib/compat/strndup.c b/lib/compat/strndup.c
new file mode 100644
index 0000000..dff79d7
--- /dev/null
+++ b/lib/compat/strndup.c
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * strndup.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "compat.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#ifndef HAVE_STRNDUP
+char *strndup(const char *str, size_t max_len)
+{
+ size_t len = 0;
+ char *out;
+
+ while (len < max_len && str[len] != '\0')
+ ++len;
+
+ out = malloc(len + 1);
+
+ if (out != NULL) {
+ memcpy(out, str, len);
+ out[len] = '\0';
+ }
+
+ return out;
+}
+#endif