branch master updated: * info/search.c: add const.

[Patrice Dumas]

This is an automated email from the git hooks/post-receive script.

pertusus pushed a commit to branch master
in repository texinfo.

The following commit(s) were added to refs/heads/master by this push:
     new d2361eda3e * info/search.c: add const.
d2361eda3e is described below

commit d2361eda3e182f47f4799d01ff6aa190bbbf5dd2
Author: Patrice Dumas <pertusus@free.fr>
AuthorDate: Sat Oct 12 19:55:01 2024 +0200

    * info/search.c: add const.
---
 ChangeLog     |  4 ++++
 info/search.c | 41 ++++++++++++++++++++++-------------------
 info/search.h | 35 ++++++++++++++++++-----------------
 3 files changed, 44 insertions(+), 36 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 6281db556f..23bb01875f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2024-10-12  Patrice Dumas  <pertusus@free.fr>
+
+       * info/search.c: add const.
+
 2024-10-12  Patrice Dumas  <pertusus@free.fr>
 
        * info/nodes.c (info_node_of_tag_ext): add an intermediary variable
diff --git a/info/search.c b/info/search.c
index 8b614ae660..4e3427c625 100644
--- a/info/search.c
+++ b/info/search.c
@@ -34,7 +34,7 @@
 /* Search forwards or backwards for the text delimited by BINDING.
    The search is forwards if BINDING->start is greater than BINDING->end. */
 enum search_result
-search (char *string, SEARCH_BINDING *binding, long *poff)
+search (const char *string, const SEARCH_BINDING *binding, long *poff)
 {
   enum search_result result;
 
@@ -49,10 +49,11 @@ search (char *string, SEARCH_BINDING *binding, long *poff)
 
 /* Expand \n and \t in regexp to newlines and tabs */
 static char *
-regexp_expand_newlines_and_tabs (char *regexp)
+regexp_expand_newlines_and_tabs (const char *regexp)
 {
   char *unescaped_regexp = xmalloc (1 + strlen (regexp));
-  char *p, *q;
+  const char *p;
+  char *q;
 
   for (p = regexp, q = unescaped_regexp; *p != '\0'; p++, q++)
     {
@@ -84,10 +85,11 @@ regexp_expand_newlines_and_tabs (char *regexp)
 
 /* Escape any special characters in SEARCH_STRING. */
 static char *
-regexp_escape_string (char *search_string)
+regexp_escape_string (const char *search_string)
 {
   char *special_chars = "\\[]^$.*(){}|+?";
-  char *p, *q;
+  const char *p;
+  char *q;
 
   char *escaped_string = xmalloc (strlen (search_string) * 2 + 1);
 
@@ -175,7 +177,7 @@ extend_matches (MATCH_STATE *state)
 /* Search BUFFER for REGEXP.  If matches are found, pass back the list of 
    matches in MATCH_STATE. */
 enum search_result
-regexp_search (char *regexp, int is_literal, int is_insensitive,
+regexp_search (const char *regexp, int is_literal, int is_insensitive,
                char *buffer, long buflen,
                MATCH_STATE *match_state)
 {
@@ -224,7 +226,7 @@ regexp_search (char *regexp, int is_literal, int 
is_insensitive,
 
 /* Search forwards for STRING through the text delimited in BINDING. */
 enum search_result
-search_forward (char *string, SEARCH_BINDING *binding, long *poff)
+search_forward (const char *string, const SEARCH_BINDING *binding, long *poff)
 {
   register int c;
   register size_t i, len;
@@ -285,7 +287,8 @@ search_forward (char *string, SEARCH_BINDING *binding, long 
*poff)
 
 /* Search for STRING backwards through the text delimited in BINDING. */
 enum search_result
-search_backward (char *input_string, SEARCH_BINDING *binding, long *poff)
+search_backward (const char *input_string, const SEARCH_BINDING *binding,
+                 long *poff)
 {
   register int i_end, c;
   register size_t i, len;
@@ -359,7 +362,7 @@ search_backward (char *input_string, SEARCH_BINDING 
*binding, long *poff)
    Return an offset of -1 if STRING does not appear in LINE.  The search
    is bound by the end of the line (i.e., either NEWLINE or 0). */
 int
-string_in_line (char *string, char *line)
+string_in_line (const char *string, char *line)
 {
   register size_t end;
   SEARCH_BINDING binding;
@@ -381,7 +384,7 @@ string_in_line (char *string, char *line)
 
 /* Return non-zero if STRING is the first text to appear at BINDING. */
 int
-looking_at (char *string, SEARCH_BINDING *binding)
+looking_at (const char *string, const SEARCH_BINDING *binding)
 {
   long search_end;
 
@@ -396,7 +399,7 @@ looking_at (char *string, SEARCH_BINDING *binding)
 /* Return non-zero if POINTER is looking at the text at STRING before an 
    end-of-line. */
 int
-looking_at_line (char *string, char *pointer)
+looking_at_line (const char *string, char *pointer)
 {
   int len;
 
@@ -557,7 +560,7 @@ at_end_of_matches (MATCH_STATE *state, size_t index)
 
 /* Return the index of the first non-whitespace character in STRING. */
 size_t
-skip_whitespace (char *string)
+skip_whitespace (const char *string)
 {
   register size_t i;
 
@@ -568,7 +571,7 @@ skip_whitespace (char *string)
 /* Return the index of the first non-whitespace or newline character in
    STRING. */
 size_t
-skip_whitespace_and_newlines (char *string)
+skip_whitespace_and_newlines (const char *string)
 {
   register size_t i;
 
@@ -578,7 +581,7 @@ skip_whitespace_and_newlines (char *string)
 
 /* Return the index of the first whitespace character in STRING. */
 size_t
-skip_non_whitespace (char *string)
+skip_non_whitespace (const char *string)
 {
   register size_t i;
 
@@ -596,10 +599,10 @@ skip_non_whitespace (char *string)
    starting in BINDING->buffer between BINDING->start and BINDING->end 
    inclusive.  Return -1 if no node separator was found. */
 long
-find_node_separator (SEARCH_BINDING *binding)
+find_node_separator (const SEARCH_BINDING *binding)
 {
   register long i;
-  char *body;
+  const char *body;
   int dir;
 
   body = binding->buffer;
@@ -639,7 +642,7 @@ find_node_separator (SEARCH_BINDING *binding)
 /* Return the length of the node separator characters that BODY is currently
    pointing at.  If it's not pointing at a node separator, return 0. */
 size_t
-skip_node_separator (char *body)
+skip_node_separator (const char *body)
 {
   register size_t i;
 
@@ -666,7 +669,7 @@ skip_node_separator (char *body)
 /* Return the absolute position of the beginning of a section in this file
    whose first line is LABEL, starting the search at binding->start. */
 long
-find_file_section (SEARCH_BINDING *binding, char *label)
+find_file_section (const SEARCH_BINDING *binding, const char *label)
 {
   SEARCH_BINDING s;
   long position;
@@ -707,7 +710,7 @@ find_file_section (SEARCH_BINDING *binding, char *label)
    really point to the right node.  It returns the absolute position of
    the separator preceding the node. */
 long
-find_node_in_binding (char *nodename, SEARCH_BINDING *binding)
+find_node_in_binding (const char *nodename, const SEARCH_BINDING *binding)
 {
   long position;
   int offset;
diff --git a/info/search.h b/info/search.h
index 1563a24b5f..9a7f6adb23 100644
--- a/info/search.h
+++ b/info/search.h
@@ -53,37 +53,38 @@ enum search_result
     search_invalid
   };
 
-enum search_result search_forward (char *string,
-                                 SEARCH_BINDING *binding, long *poff);
-enum search_result search_backward (char *input_string,
-                                    SEARCH_BINDING *binding,
+enum search_result search_forward (const char *string,
+                                 const SEARCH_BINDING *binding, long *poff);
+enum search_result search_backward (const char *input_string,
+                                    const SEARCH_BINDING *binding,
                                     long *poff);
-enum search_result search (char *string, SEARCH_BINDING *binding,
+enum search_result search (const char *string, const SEARCH_BINDING *binding,
                            long *poff);
-enum search_result regexp_search (char *regexp,
+enum search_result regexp_search (const char *regexp,
                int is_literal, int is_insensitive,
                char *buffer, long buflen,
                MATCH_STATE *match_state);
-int looking_at (char *string, SEARCH_BINDING *binding);
-int looking_at_line (char *string, char *pointer);
+int looking_at (const char *string, const SEARCH_BINDING *binding);
+int looking_at_line (const char *string, char *pointer);
 
 /* Note that STRING_IN_LINE () always returns the offset of the 1st character
    after the string. */
-int string_in_line (char *string, char *line);
+int string_in_line (const char *string, char *line);
 
 /* Function names that start with "skip" are passed a string, and return
    an offset from the start of that string.  Function names that start
    with "find" are passed a SEARCH_BINDING, and return an absolute position
    marker of the item being searched for.  "Find" functions return a value
    of -1 if the item being looked for couldn't be found. */
-size_t skip_whitespace (char *string);
-size_t skip_non_whitespace (char *string);
-size_t skip_whitespace_and_newlines (char *string);
-size_t skip_node_separator (char *body);
-
-long find_node_separator (SEARCH_BINDING *binding);
-long find_file_section (SEARCH_BINDING *binding, char *label);
-long find_node_in_binding (char *nodename, SEARCH_BINDING *binding);
+size_t skip_whitespace (const char *string);
+size_t skip_non_whitespace (const char *string);
+size_t skip_whitespace_and_newlines (const char *string);
+size_t skip_node_separator (const char *body);
+
+long find_node_separator (const SEARCH_BINDING *binding);
+long find_file_section (const SEARCH_BINDING *binding, const char *label);
+long find_node_in_binding (const char *nodename,
+                           const SEARCH_BINDING *binding);
 
 regmatch_t match_by_index (MATCH_STATE *state, size_t index);
 enum search_result match_in_match_list (MATCH_STATE *state,