The ftepp now always outputs into a string buffer, with -E the buffer will be dumped to stdout or the via -o specified file, without -E it'll be passed to the parser to be compiled

ftepp.c

@@ -62,9 +62,7 @@ typedef struct {
     ppcondition *conditions;
     ppmacro    **macros;
 
-    bool         to_string;
+    char        *output_string;
-    char        *output;
-    FILE        *output_file;
 } ftepp_t;
 
 #define ftepp_tokval(f) ((f)->lex->tok.value)
@@ -174,8 +172,6 @@ static void ftepp_delete(ftepp_t *self)
     vec_free(self->conditions);
     if (self->lex)
         lex_close(self->lex);
-    if (self->output_file)
-        fclose(self->output_file);
     mem_d(self);
 }
 
@@ -185,12 +181,8 @@ static void ftepp_out(ftepp_t *ftepp, const char *str, bool ignore_cond)
     {
         size_t len;
         char  *data;
-        if (!ftepp->to_string) {
-            fprintf((ftepp->output_file ? ftepp->output_file : stdout), "%s", str);
-            return;
-        }
         len = strlen(str);
-        data = vec_add(ftepp->output, len);
+        data = vec_add(ftepp->output_string, len);
         memcpy(data, str, len);
     }
 }
@@ -449,8 +441,7 @@ static bool macro_params_find(ppmacro *macro, const char *name, size_t *idx)
 static bool ftepp_preprocess(ftepp_t *ftepp);
 static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *params)
 {
-    char     *old_string = ftepp->output;
+    char     *old_string = ftepp->output_string;
-    bool      old_string_flag = ftepp->to_string;
     lex_file *old_lexer = ftepp->lex;
     bool retval = true;
 
@@ -461,8 +452,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param
     if (!vec_size(macro->output))
         return true;
 
-    ftepp->output    = NULL;
+    ftepp->output_string = NULL;
-    ftepp->to_string = true;
     for (o = 0; o < vec_size(macro->output); ++o) {
         pptoken *out = macro->output[o];
         switch (out->token) {
@@ -498,19 +488,18 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param
                 break;
         }
     }
-    vec_push(ftepp->output, 0);
+    vec_push(ftepp->output_string, 0);
     /* Now run the preprocessor recursively on this string buffer */
     /*
-    printf("__________\n%s\n=========\n", ftepp->output);
+    printf("__________\n%s\n=========\n", ftepp->output_string);
     */
-    inlex = lex_open_string(ftepp->output, vec_size(ftepp->output)-1, ftepp->lex->name);
+    inlex = lex_open_string(ftepp->output_string, vec_size(ftepp->output_string)-1, ftepp->lex->name);
     if (!inlex) {
         ftepp_error(ftepp, "internal error: failed to instantiate lexer");
         retval = false;
         goto cleanup;
     }
-    ftepp->output    = old_string;
+    ftepp->output_string = old_string;
-    ftepp->to_string = old_string_flag;
     ftepp->lex = inlex;
     if (!ftepp_preprocess(ftepp)) {
         lex_close(ftepp->lex);
@@ -520,8 +509,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param
 
 cleanup:
     ftepp->lex           = old_lexer;
-    ftepp->output    = old_string;
+    ftepp->output_string = old_string;
-    ftepp->to_string = old_string_flag;
     return retval;
 }
 
@@ -1056,13 +1044,22 @@ bool ftepp_preprocess_string(const char *name, const char *str)
     return ftepp_preprocess_done();
 }
 
-bool ftepp_init(FILE *out)
+bool ftepp_init()
 {
     ftepp = ftepp_new();
-    ftepp->output_file = out;
     return !!ftepp;
 }
 
+const char *ftepp_get()
+{
+    return ftepp->output_string;
+}
+
+void ftepp_flush()
+{
+    vec_free(ftepp->output_string);
+}
+
 void ftepp_finish()
 {
     if (!ftepp)

gmqcc.h

@@ -751,14 +751,18 @@ bool parser_compile_file  (const char *filename);
 bool parser_compile_string(const char *name, const char *str);
 bool parser_finish        (const char *output);
 void parser_cleanup       ();
+/* There's really no need to strlen() preprocessed files */
+bool parser_compile_string_len(const char *name, const char *str, size_t len);
 
 /*===================================================================*/
 /*====================== ftepp.c commandline ========================*/
 /*===================================================================*/
-bool ftepp_init             (FILE *out);
+bool ftepp_init             ();
 bool ftepp_preprocess_file  (const char *filename);
 bool ftepp_preprocess_string(const char *name, const char *str);
 void ftepp_finish           ();
+const char *ftepp_get       ();
+void ftepp_flush            ();
 
 /*===================================================================*/
 /*======================= main.c commandline ========================*/

main.c

@@ -202,6 +202,7 @@ static bool options_parse(int argc, char **argv) {
                     options_set(opts_flags, ADJUST_VECTOR_FIELDS, false);
                     opts_standard = COMPILER_QCC;
                 } else if (!strcmp(argarg, "fte") || !strcmp(argarg, "fteqcc")) {
+                    options_set(opts_flags, FTEPP,                true);
                     options_set(opts_flags, ADJUST_VECTOR_FIELDS, false);
                     opts_standard = COMPILER_FTEQCC;
                 } else if (!strcmp(argarg, "qccx")) {
@@ -416,6 +417,7 @@ int main(int argc, char **argv) {
     int retval = 0;
     bool opts_output_free = false;
     bool progs_src = false;
+    FILE *outfile = NULL;
 
     app_name = argv[0];
     con_init();
@@ -440,6 +442,7 @@ int main(int argc, char **argv) {
     options_set(opts_warn, WARN_MULTIFILE_IF, true);
 
     options_set(opts_flags, ADJUST_VECTOR_FIELDS, true);
+    options_set(opts_flags, FTEPP, false);
 
     if (!options_parse(argc, argv)) {
         return usage();
@@ -466,6 +469,19 @@ int main(int argc, char **argv) {
         con_out("standard = %i\n", opts_standard);
     }
 
+    if (opts_pp_only) {
+        if (opts_output_wasset) {
+            outfile = util_fopen(opts_output, "wb");
+            if (!outfile) {
+                con_err("failed to open `%s` for writing\n", opts_output);
+                retval = 1;
+                goto cleanup;
+            }
+        }
+        else
+            outfile = stdout;
+    }
+
     if (!opts_pp_only) {
         if (!parser_init()) {
             con_err("failed to initialize parser\n");
@@ -473,17 +489,8 @@ int main(int argc, char **argv) {
             goto cleanup;
         }
     }
-    if (opts_pp_only || opts_standard == COMPILER_FTEQCC) {
+    if (opts_pp_only || OPTS_FLAG(FTEPP)) {
-        FILE *out = NULL;
+        if (!ftepp_init()) {
-        if (opts_output_wasset) {
-            out = util_fopen(opts_output, "wb");
-            if (!out) {
-                con_err("failed to open `%s` for writing\n", opts_output);
-                retval = 1;
-                goto cleanup;
-            }
-        }
-        if (!ftepp_init(out)) {
             con_err("failed to initialize parser\n");
             retval = 1;
             goto cleanup;
@@ -555,11 +562,30 @@ srcdone:
                     retval = 1;
                     goto cleanup;
                 }
+                fprintf(outfile, "%s", ftepp_get());
+                ftepp_flush();
             }
-            else if (!parser_compile_file(items[itr].filename)) {
+            else {
+                if (OPTS_FLAG(FTEPP)) {
+                    const char *data;
+                    if (!ftepp_preprocess_file(items[itr].filename)) {
                         retval = 1;
                         goto cleanup;
                     }
+                    data = ftepp_get();
+                    if (!parser_compile_string_len(items[itr].filename, data, vec_size(data)-1)) {
+                        retval = 1;
+                        goto cleanup;
+                    }
+                    ftepp_flush();
+                }
+                else {
+                    if (!parser_compile_file(items[itr].filename)) {
+                        retval = 1;
+                        goto cleanup;
+                    }
+                }
+            }
 
             if (progs_src) {
                 mem_d(items[itr].filename);

opts.def

@@ -31,6 +31,7 @@
     GMQCC_DEFINE_FLAG(DARKPLACES_STRING_TABLE_BUG)
     GMQCC_DEFINE_FLAG(OMIT_NULL_BYTES)
     GMQCC_DEFINE_FLAG(ADJUST_VECTOR_FIELDS)
+    GMQCC_DEFINE_FLAG(FTEPP)
 #endif
 
 /* warning flags */

parser.c

@@ -3425,6 +3425,16 @@ bool parser_compile_file(const char *filename)
     return parser_compile();
 }
 
+bool parser_compile_string_len(const char *name, const char *str, size_t len)
+{
+    parser->lex = lex_open_string(str, len, name);
+    if (!parser->lex) {
+        con_err("failed to create lexer for string \"%s\"\n", name);
+        return false;
+    }
+    return parser_compile();
+}
+
 bool parser_compile_string(const char *name, const char *str)
 {
     parser->lex = lex_open_string(str, strlen(str), name);