+
+/*-
+ *---------------------------------------------------------------------
+ * Parse_FromString --
+ * Start Parsing from the given string
+ *
+ * Results:
+ * None
+ *
+ * Side Effects:
+ * A structure is added to the includes Lst and readProc, lineno,
+ * fname and curFILE are altered for the new file
+ *---------------------------------------------------------------------
+ */
+void
+Parse_FromString(str)
+ char *str;
+{
+ IFile *oldFile; /* state associated with this file */
+
+ if (DEBUG(FOR))
+ (void) fprintf(stderr, "%s\n----\n", str);
+
+ oldFile = (IFile *) emalloc (sizeof (IFile));
+ oldFile->lineno = lineno;
+ oldFile->fname = fname;
+ oldFile->F = curFILE;
+ oldFile->p = curPTR;
+
+ (void) Lst_AtFront (includes, (ClientData)oldFile);
+
+ curFILE = NULL;
+ curPTR = (PTR *) emalloc (sizeof (PTR));
+ curPTR->str = curPTR->ptr = str;
+ lineno = 0;
+ fname = strdup(fname);
+}
+
+
+#ifdef SYSVINCLUDE
+/*-
+ *---------------------------------------------------------------------
+ * ParseTraditionalInclude --
+ * Push to another file.
+ *
+ * The input is the line minus the "include". The file name is
+ * the string following the "include".
+ *
+ * Results:
+ * None
+ *
+ * Side Effects:
+ * A structure is added to the includes Lst and readProc, lineno,
+ * fname and curFILE are altered for the new file
+ *---------------------------------------------------------------------
+ */
+static void
+ParseTraditionalInclude (file)
+ char *file; /* file specification */
+{
+ char *fullname; /* full pathname of file */
+ IFile *oldFile; /* state associated with current file */
+ char *cp; /* current position in file spec */
+ char *prefEnd;
+
+ /*
+ * Skip over whitespace
+ */
+ while ((*file == ' ') || (*file == '\t')) {
+ file++;
+ }
+
+ if (*file == '\0') {
+ Parse_Error (PARSE_FATAL,
+ "Filename missing from \"include\"");
+ return;
+ }
+
+ /*
+ * Skip to end of line or next whitespace
+ */
+ for (cp = file; *cp && *cp != '\n' && *cp != '\t' && *cp != ' '; cp++) {
+ continue;
+ }
+
+ *cp = '\0';
+
+ /*
+ * Substitute for any variables in the file name before trying to
+ * find the thing.
+ */
+ file = Var_Subst (NULL, file, VAR_CMD, FALSE);
+
+ /*
+ * Now we know the file's name, we attempt to find the durn thing.
+ * A return of NULL indicates the file don't exist.
+ *
+ * Include files are first searched for relative to the including
+ * file's location. We don't want to cd there, of course, so we
+ * just tack on the old file's leading path components and call
+ * Dir_FindFile to see if we can locate the beast.
+ * XXX - this *does* search in the current directory, right?
+ */
+
+ prefEnd = strrchr (fname, '/');
+ if (prefEnd != (char *)NULL) {
+ char *newName;
+
+ *prefEnd = '\0';
+ newName = str_concat (fname, file, STR_ADDSLASH);
+ fullname = Dir_FindFile (newName, parseIncPath);
+ if (fullname == (char *)NULL) {
+ fullname = Dir_FindFile(newName, dirSearchPath);
+ }
+ free (newName);
+ *prefEnd = '/';
+ } else {
+ fullname = (char *)NULL;
+ }
+
+ if (fullname == (char *)NULL) {
+ /*
+ * System makefile or makefile wasn't found in same directory as
+ * included makefile. Search for it first on the -I search path,
+ * then on the .PATH search path, if not found in a -I directory.
+ * XXX: Suffix specific?
+ */
+ fullname = Dir_FindFile (file, parseIncPath);
+ if (fullname == (char *)NULL) {
+ fullname = Dir_FindFile(file, dirSearchPath);
+ }
+ }
+
+ if (fullname == (char *)NULL) {
+ /*
+ * Still haven't found the makefile. Look for it on the system
+ * path as a last resort.
+ */
+ fullname = Dir_FindFile(file, sysIncPath);
+ }
+
+ if (fullname == (char *) NULL) {
+ Parse_Error (PARSE_FATAL, "Could not find %s", file);
+ return;
+ }
+
+ /*
+ * Once we find the absolute path to the file, we get to save all the
+ * state from the current file before we can start reading this
+ * include file. The state is stored in an IFile structure which
+ * is placed on a list with other IFile structures. The list makes
+ * a very nice stack to track how we got here...
+ */
+ oldFile = (IFile *) emalloc (sizeof (IFile));
+ oldFile->fname = fname;
+
+ oldFile->F = curFILE;
+ oldFile->p = curPTR;
+ oldFile->lineno = lineno;
+
+ (void) Lst_AtFront (includes, (ClientData)oldFile);
+
+ /*
+ * Once the previous state has been saved, we can get down to reading
+ * the new file. We set up the name of the file to be the absolute
+ * name of the include file so error messages refer to the right
+ * place. Naturally enough, we start reading at line number 0.
+ */
+ fname = fullname;
+ lineno = 0;
+
+ curFILE = fopen (fullname, "r");
+ curPTR = NULL;
+ if (curFILE == (FILE * ) NULL) {
+ Parse_Error (PARSE_FATAL, "Cannot open %s", fullname);
+ /*
+ * Pop to previous file
+ */
+ (void) ParseEOF(1);
+ }
+}
+#endif
+
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