Pull the argv parsing code into its own file

So it can be used from multiple code paths

3 files changed, 160 insertions, 0 deletions

diff --git a/common/Makefile.am b/common/Makefile.am
index b583a5c..d7b4439 100644
--- a/common/Makefile.am
+++ b/common/Makefile.am
@@ -16,6 +16,7 @@ noinst_LTLIBRARIES = \
 	$(NULL)
 
 libp11_common_la_SOURCES = \
+	argv.c argv.h \
 	attrs.c attrs.h \
 	array.c array.h \
 	buffer.c buffer.h \
diff --git a/common/argv.c b/common/argv.c
new file mode 100644
index 0000000..6d91bfa
--- /dev/null
+++ b/common/argv.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2012 Red Hat Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *     * Redistributions of source code must retain the above
+ *       copyright notice, this list of conditions and the
+ *       following disclaimer.
+ *     * Redistributions in binary form must reproduce the
+ *       above copyright notice, this list of conditions and
+ *       the following disclaimer in the documentation and/or
+ *       other materials provided with the distribution.
+ *     * The names of contributors to this software may not be
+ *       used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Author: Stef Walter <stefw@redhat.com>
+ */
+
+#include "config.h"
+
+#include "argv.h"
+#include "debug.h"
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+bool
+p11_argv_parse (const char *string,
+                void (*sink) (char *, void *),
+                void *argument)
+{
+	char quote = '\0';
+	char *src, *dup, *at, *arg;
+	bool ret = true;
+
+	return_val_if_fail (string != NULL, false);
+	return_val_if_fail (sink != NULL, false);
+
+	src = dup = strdup (string);
+	return_val_if_fail (dup != NULL, false);
+
+	arg = at = src;
+	for (src = dup; *src; src++) {
+
+		/* Matching quote */
+		if (quote == *src) {
+			quote = '\0';
+
+		/* Inside of quotes */
+		} else if (quote != '\0') {
+			if (*src == '\\') {
+				*at++ = *src++;
+				if (!*src) {
+					ret = false;
+					goto done;
+				}
+				if (*src != quote)
+					*at++ = '\\';
+			}
+			*at++ = *src;
+
+		/* Space, not inside of quotes */
+		} else if (isspace (*src)) {
+			*at = 0;
+			sink (arg, argument);
+			arg = at;
+
+		/* Other character outside of quotes */
+		} else {
+			switch (*src) {
+			case '\'':
+			case '"':
+				quote = *src;
+				break;
+			case '\\':
+				*at++ = *src++;
+				if (!*src) {
+					ret = false;
+					goto done;
+				}
+			/* fall through */
+			default:
+				*at++ = *src;
+				break;
+			}
+		}
+	}
+
+
+	if (at != arg) {
+		*at = 0;
+		sink (arg, argument);
+	}
+
+done:
+	free (dup);
+	return ret;
+}
diff --git a/common/argv.h b/common/argv.h
new file mode 100644
index 0000000..8f95490
--- /dev/null
+++ b/common/argv.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2012 Red Hat Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *     * Redistributions of source code must retain the above
+ *       copyright notice, this list of conditions and the
+ *       following disclaimer.
+ *     * Redistributions in binary form must reproduce the
+ *       above copyright notice, this list of conditions and
+ *       the following disclaimer in the documentation and/or
+ *       other materials provided with the distribution.
+ *     * The names of contributors to this software may not be
+ *       used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Author: Stef Walter <stefw@redhat.com>
+ */
+
+#ifndef P11_ARGV_H_
+#define P11_ARGV_H_
+
+#include "compat.h"
+
+bool             p11_argv_parse                     (const char *string,
+                                                     void (*sink) (char *, void *),
+                                                     void *argument);
+
+#endif /* P11_ARGV_H_ */