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Introduce strncmp_iw

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The explicit locations completer patch will need a strncmp_iw
function, that to strcmp_iw like strncmp is to strcmp.  This patch
implements it.

(Unit tests added a bit further down in this series will exercise
this.)

gdb/ChangeLog:
2017-07-17  Pedro Alves  <palves@redhat.com>

	* utils.c (enum class strncmp_iw_mode): New.
	(strcmp_iw): Rename to ...
	(strncmp_iw_with_mode): ... this.  Add string2_len and mode
	parameters.  Handle them.
	(strncmp_iw): New.
	(strcmp_iw): Reimplement as wrapper around strncmp_iw_with_mode.
	* utils.h (strncmp_iw): Declare.
	(strcmp_iw): Move describing comments here.
This commit is contained in:
Pedro Alves
2017-07-17 20:08:48 +01:00
parent dd57c19c1a
commit 1d550c828c
3 changed files with 84 additions and 25 deletions
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19
gdb/utils.h
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@ -31,7 +31,24 @@ extern void initialize_utils (void);
extern int sevenbit_strings;
extern int strcmp_iw (const char *, const char *);
/* Do a strncmp() type operation on STRING1 and STRING2, ignoring any
differences in whitespace. STRING2_LEN is STRING2's length.
Returns 0 if STRING1 matches STRING2_LEN characters of STRING2,
non-zero otherwise (slightly different than strncmp()'s range of
return values). */
extern int strncmp_iw (const char *string1, const char *string2,
size_t string2_len);
/* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
differences in whitespace. Returns 0 if they match, non-zero if
they don't (slightly different than strcmp()'s range of return
values).
As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
This "feature" is useful when searching for matching C++ function
names (such as if the user types 'break FOO', where FOO is a
mangled C++ function). */
extern int strcmp_iw (const char *string1, const char *string2);
extern int strcmp_iw_ordered (const char *, const char *);