My cocci script (attached) ignores lines that are embedded inside other
macros. Example:
#define DB(x) x
void func()
{
DB(if (DEBUG_IO_TRACE())
DBG_PRINTF((DBG_MODULE_GLOBAL, DBG_LEVEL_INFO, "inb
%#04x \n", addr));)
}
Is there a way to get coccinelle to ignore the DB( and )?
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/*
* Coccinelle file to replace DBG_PRINTF() calls with NV_PRINTF()
*
* To apply, make the patch file, fix it, call 'p4 edit', and then apply the
* patch:
* spatch --sp-file nv_printf.cocci --dir . > /tmp/n.patch
* p4 edit `lsdiff --strip 1 /tmp/n.patch`
* sed -Ei 's/(^\+.*)( $)/\1/' /tmp/n.patch
* patch -p 1 < /tmp/n.patch
*
* Coccinelle has a bug where sometimes it adds trailing spaces to lines.
* The 'sed' command removes those trailing whitespaces.
*
* Note that coccinelle chokes on multi-line string literals that are split
* with a \ line continuation character. So
* "foo \
* bar"
* should be combined into
* "foo "
* "bar"
* before running this script. Use this command to find problematic lines:
* grep '^[^"]*"[^"]*\\$' *
*
* After running the script, you want to review the changes and compress
* NV_PRINTF() calls into fewer lines. Coccinelle does some combining of
* parameters into fewer lines, but it's not aggressive.
*/
// Remove the double-parentheses in DBG_PRINTF statements
@@
@@
DBG_PRINTF(
-(
...
-)
);
// Replace DBG_PRINTF with NV_PRINTF
@rule1@
expression x;
expression list y;
@@
-DBG_PRINTF(x, y);
+NV_PRINTF(y);
// Replace the DBG_xxx or DEBUGLEVEL_xxx with LEVEL_xxx
@depends on rule1@
@@
NV_PRINTF(...,
-\(DBG_LEVEL_INFO \| DEBUGLEVEL_TRACEINFO \| DBG_LEVEL_SETUPINFO \|
DEBUGLEVEL_SETUPINFO\)
+LEVEL_INFO
, ...);
@depends on rule1@
@@
NV_PRINTF(...,
-\(DBG_LEVEL_USERERRORS \| DEBUGLEVEL_USERERRORS\)
+LEVEL_NOTICE
, ...);
@depends on rule1@
@@
NV_PRINTF(...,
-\(DBG_LEVEL_WARNINGS \| DEBUGLEVEL_WARNINGS\)
+LEVEL_WARNING
, ...);
@depends on rule1@
@@
NV_PRINTF(...,
-\(DBG_LEVEL_ERRORS \| DEBUGLEVEL_ERRORS\)
+LEVEL_ERROR
, ...);
// Use Python to clean up the string literals.
// Comments are still C-style though
@r@
constant char[] c;
expression list[n] es;
@@
NV_PRINTF(es,c,...)
@script:python s@
c << r.c;
c2;
@@
import re
// Combine "xxx" "yyy" into "xxxyyy"
m = re.match(r'"([^"]+)" "([^"]+)"', c)
if m:
c = '"%s%s"' % (m.group(1), m.group(2))
// Remove the "NXXX: " prefix
m = re.match(r'"N[\-A-Z]+: ([^"]*)"', c)
if m:
c = '"%s"' % m.group(1)
coccinelle.c2 = c
@@
expression list[r.n] r.es;
constant char[] r.c;
identifier s.c2;
@@
NV_PRINTF(es,
-c
+c2
,...)
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