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(readpipe): Remove decl.

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(scan_skel): New function, to be used in place of m4_invoke.
Read from stream rather than file.
This commit is contained in:
Paul Eggert
2002-10-20 06:32:04 +00:00
parent 573312acb6
commit 2cdb2a7b05
1 changed files with 6 additions and 37 deletions
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43
src/scan-skel.l
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@@ -52,47 +52,16 @@ static char *yyoutname = NULL;
<<EOF>> xfclose (yyout); free (yyoutname); return EOF; <<EOF>> xfclose (yyout); free (yyoutname); return EOF;
%% %%
/* From lib/readpipe.c. */ /*------------------------.
FILE *readpipe PARAMS ((const char *, ...)); | Scan a Bison skeleton. |
`------------------------*/
/*----------------------. void scan_skel (FILE *);
| Run our backend, M4. |
`----------------------*/
void m4_invoke PARAMS ((const char *definitions));
void void
m4_invoke (const char *definitions) scan_skel (FILE *in)
{ {
/* Invoke m4 on the definition of the muscles, and the skeleton. */ skel_in = in;
const char *bison_pkgdatadir = getenv ("BISON_PKGDATADIR");
const char *m4 = getenv ("M4");
int pkg_data_len;
char *full_skeleton;
if (!m4)
m4 = M4;
if (!bison_pkgdatadir)
bison_pkgdatadir = PKGDATADIR;
pkg_data_len = strlen (bison_pkgdatadir);
full_skeleton = XMALLOC (char, pkg_data_len + strlen (skeleton) + 2);
if (bison_pkgdatadir[pkg_data_len-1] == '/')
sprintf (full_skeleton, "%s%s", bison_pkgdatadir, skeleton);
else
sprintf (full_skeleton, "%s/%s", bison_pkgdatadir, skeleton);
if (trace_flag & trace_tools)
fprintf (stderr,
"running: %s -I %s m4sugar/m4sugar.m4 %s %s\n",
m4, bison_pkgdatadir, definitions, full_skeleton);
skel_in = readpipe (m4,
"-I", bison_pkgdatadir,
"m4sugar/m4sugar.m4",
definitions,
full_skeleton,
NULL);
XFREE (full_skeleton);
if (!skel_in)
error (EXIT_FAILURE, errno, "cannot run m4");
skel_lex (); skel_lex ();
/* Reclaim Flex's buffers. */ /* Reclaim Flex's buffers. */