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-rw-r--r--nuttx/tools/cmpconfig.c328
1 files changed, 328 insertions, 0 deletions
diff --git a/nuttx/tools/cmpconfig.c b/nuttx/tools/cmpconfig.c
new file mode 100644
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--- /dev/null
+++ b/nuttx/tools/cmpconfig.c
@@ -0,0 +1,328 @@
+/****************************************************************************
+ * tools/cmpconfig.c
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name NuttX nor the names of its contributors may 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+struct variable_s
+{
+ struct variable_s *flink;
+ char *var;
+ char *val;
+ char storage[1];
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+static void show_usage(const char *progname)
+{
+ fprintf(stderr, "USAGE: %s <config1> <config2>\n", progname);
+ exit(EXIT_FAILURE);
+}
+
+static char *skip_space(char *ptr)
+{
+ while (*ptr && isspace((int)*ptr)) ptr++;
+ return ptr;
+}
+
+static char *read_line(FILE *stream, char *line, int len)
+{
+ char *ptr;
+
+ for (;;)
+ {
+ line[len-1] = '\0';
+ if (!fgets(line, len, stream))
+ {
+ return NULL;
+ }
+ else
+ {
+ ptr = skip_space(line);
+ if (*ptr && *ptr != '#' && *ptr != '\n')
+ {
+ return ptr;
+ }
+ }
+ }
+}
+
+static char *find_name_end(char *ptr)
+{
+ while (*ptr && (isalnum((int)*ptr) || *ptr == '_')) ptr++;
+ return ptr;
+}
+
+static char *find_value_end(char *ptr)
+{
+ while (*ptr && !isspace((int)*ptr))
+ {
+ if (*ptr == '"')
+ {
+ do ptr++; while (*ptr && *ptr != '"');
+ if (*ptr) ptr++;
+ }
+ else
+ {
+ do ptr++; while (*ptr && !isspace((int)*ptr) && *ptr != '"');
+ }
+ }
+ return ptr;
+}
+
+static void parse_line(char *ptr, char **varname, char **varval)
+{
+ *varname = ptr;
+ *varval = NULL;
+
+ ptr = find_name_end(ptr);
+ if (*ptr && *ptr != '=')
+ {
+ *ptr = '\0';
+ ptr = skip_space(ptr + 1);
+ }
+
+ if (*ptr == '=')
+ {
+ *ptr = '\0';
+ ptr = skip_space(ptr + 1);
+ if (*ptr)
+ {
+ *varval = ptr;
+ ptr = find_value_end(ptr);
+ *ptr = '\0';
+ }
+ }
+}
+
+static void parse_file(FILE *stream, struct variable_s **list)
+{
+ char line[10242];
+ struct variable_s *curr;
+ struct variable_s *prev;
+ struct variable_s *next;
+ char *varname;
+ char *varval;
+ char *ptr;
+
+ do
+ {
+ ptr = read_line(stream, line, 1024);
+ if (ptr)
+ {
+ parse_line(ptr, &varname, &varval);
+ if (!varval || strcmp(varval, "n") == 0)
+ {
+ continue;
+ }
+
+ if (varname)
+ {
+ int varlen = strlen(varname) + 1;
+ int vallen = 0;
+
+ if (varval)
+ {
+ vallen = strlen(varval) + 1;
+ }
+
+ curr = (struct variable_s *)malloc(sizeof(struct variable_s) + varlen + vallen - 1);
+ if (curr)
+ {
+ curr->var = &curr->storage[0];
+ strcpy(curr->var, varname);
+
+ curr->val = NULL;
+ if (varval)
+ {
+ curr->val = &curr->storage[varlen];
+ strcpy(curr->val, varval);
+ }
+ }
+
+ prev = 0;
+ next = *list;
+ while (next && strcmp(next->var, curr->var) <= 0)
+ {
+ prev = next;
+ next = next->flink;
+ }
+
+ if (prev)
+ {
+ prev->flink = curr;
+ }
+ else
+ {
+ *list = curr;
+ }
+ curr->flink = next;
+ }
+ }
+ }
+ while (ptr);
+}
+
+static void compare_variables(struct variable_s *list1, struct variable_s *list2)
+{
+ char *varval1;
+ char *varval2;
+
+ while (list1 || list2)
+ {
+ if (list1 && list1->val)
+ {
+ varval1 = list1->val;
+ }
+ else
+ {
+ varval1 = "<NULL>";
+ }
+
+ if (list2 && list2->val)
+ {
+ varval2 = list2->val;
+ }
+ else
+ {
+ varval2 = "<NULL>";
+ }
+
+ if (!list1)
+ {
+ printf("file1:\n");
+ printf("file2: %s=%s\n\n", list2->var, varval2);
+ list2 = list2->flink;
+ }
+ else if (!list2)
+ {
+ printf("file1: %s=%s\n", list1->var, varval1);
+ printf("file2:\n\n");
+ list1 = list1->flink;
+ }
+ else
+ {
+ int result = strcmp(list1->var, list2->var);
+ if (result < 0)
+ {
+ printf("file1: %s=%s\n", list1->var, varval1);
+ printf("file2:\n\n");
+ list1 = list1->flink;
+ }
+ else if (result > 0)
+ {
+ printf("file1:\n");
+ printf("file2: %s=%s\n\n", list2->var, varval2);
+ list2 = list2->flink;
+ }
+ else
+ {
+ int result = strcmp(varval1, varval2);
+ if (result != 0)
+ {
+ printf("file1: %s=%s\n", list1->var, varval1);
+ printf("file2: %s=%s\n\n", list2->var, varval2);
+ }
+
+ list1 = list1->flink;
+ list2 = list2->flink;
+ }
+ }
+ }
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+ struct variable_s *list1 = 0;
+ struct variable_s *list2 = 0;
+ FILE *stream1;
+ FILE *stream2;
+
+ if (argc != 3)
+ {
+ fprintf(stderr, "Unexpected number of arguments: %d\n\n", argc);
+ show_usage(argv[0]);
+ }
+
+ stream1 = fopen(argv[1], "r");
+ if (!stream1)
+ {
+ fprintf(stderr, "Failed to open %s for reading: %s\n\n",
+ argv[1], strerror(errno));
+ show_usage(argv[0]);
+ }
+
+ stream2 = fopen(argv[2], "r");
+ if (!stream2)
+ {
+ fprintf(stderr, "Failed to open %s for reading: %s\n\n",
+ argv[2], strerror(errno));
+ show_usage(argv[0]);
+ }
+
+ parse_file(stream1, &list1);
+ parse_file(stream2, &list2);
+
+ fclose(stream1);
+ fclose(stream2);
+
+ printf("Comparing:\n\n");
+ printf(" file1 = %s\n", argv[1]);
+ printf(" file2 = %s\n\n", argv[2]);
+ compare_variables(list1, list2);
+ return EXIT_SUCCESS;
+}
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