utility: improved box integration, removed need for build-time macro.

1 files changed, 110 insertions, 0 deletions

diff --git a/src/driver/pe_amain.c b/src/driver/pe_amain.c
new file mode 100644
index 0000000..caebe58
--- /dev/null
+++ b/src/driver/pe_amain.c
@@ -0,0 +1,110 @@
+/***************************************************************/
+/*  perk: PE Resource Kit                                      */
+/*  Copyright (C) 2015--2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PERK.          */
+/***************************************************************/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <perk/perk.h>
+#include <perk/perk_output.h>
+#include "perk_driver_impl.h"
+
+#ifndef PERK_DRIVER_FLAGS
+#define PERK_DRIVER_FLAGS	PERK_DRIVER_VERBOSITY_ERRORS \
+				| PERK_DRIVER_VERBOSITY_USAGE
+#endif
+
+static const char vermsg[] = "%s%s%s (git://midipix.org/perk): "
+			     "version %s%d.%d.%d%s.\n"
+			     "[commit reference: %s%s%s]\n";
+
+static const char * const pe_ver_color[6] = {
+		"\x1b[1m\x1b[35m","\x1b[0m",
+		"\x1b[1m\x1b[32m","\x1b[0m",
+		"\x1b[1m\x1b[34m","\x1b[0m"
+};
+
+static const char * const pe_ver_plain[6] = {
+		"","",
+		"","",
+		"",""
+};
+
+static ssize_t pe_version(struct pe_driver_ctx * dctx)
+{
+	const struct pe_source_version * verinfo;
+	const char * const * verclr;
+
+	verinfo = pe_source_version();
+	verclr  = isatty(STDOUT_FILENO) ? pe_ver_color : pe_ver_plain;
+
+	return fprintf(stdout,vermsg,
+			verclr[0],dctx->program,verclr[1],
+			verclr[2],verinfo->major,verinfo->minor,
+			verinfo->revision,verclr[3],
+			verclr[4],verinfo->commit,verclr[5]);
+}
+
+static ssize_t pe_paragraph_break(struct pe_unit_ctx * uctx, int * fpara)
+{
+	if (*fpara) {
+		*fpara = 0;
+
+		if (uctx->cctx->ioctx->fdout >= 0)
+			return write(uctx->cctx->ioctx->fdout,"\n",1);
+		else
+			return fputc('\n',stdout);
+	} else
+		return 0;
+}
+
+static void pe_perform_unit_actions(struct pe_unit_ctx * uctx)
+{
+	int      fpara = 0;
+	uint64_t flags = uctx->cctx->fmtflags;
+
+	if (flags & PERK_OUTPUT_EXPORT_SYMS) {
+		uctx->status = pe_output_export_symbols(uctx->meta,uctx->cctx,0);
+		uctx->nerrors += !!uctx->status;
+		fpara += uctx->meta->summary.nexpsyms;
+	}
+
+	if ((flags & PERK_OUTPUT_IMPORT_LIBS) || (flags & PERK_OUTPUT_IMPORT_SYMS)) {
+		pe_paragraph_break(uctx,&fpara);
+		uctx->status = pe_output_import_libraries(uctx->meta,uctx->cctx,0);
+		uctx->nerrors += !!uctx->status;
+		fpara += (uctx->meta->summary.nimplibs > 0);
+	}
+}
+
+static int pe_exit(struct pe_driver_ctx * dctx, int nerrors)
+{
+	pe_free_driver_ctx(dctx);
+	return nerrors ? 2 : 0;
+}
+
+int pe_main(int argc, char ** argv, char ** envp)
+{
+	int			ret;
+	struct pe_driver_ctx *	dctx;
+	struct pe_unit_ctx *	uctx;
+	const char **		unit;
+
+	if ((ret = pe_get_driver_ctx(argv,envp,PERK_DRIVER_FLAGS,&dctx)))
+		return (ret == PERK_USAGE) ? !--argc : 2;
+
+	if (dctx->cctx->drvflags & PERK_DRIVER_VERSION)
+		if ((pe_version(dctx)) < 0)
+			return pe_exit(dctx,2);
+
+	for (unit=dctx->units; *unit; unit++) {
+		if (!(pe_get_unit_ctx(dctx,*unit,&uctx))) {
+			pe_perform_unit_actions(uctx);
+			ret += uctx->nerrors;
+			pe_free_unit_ctx(uctx);
+		}
+	}
+
+	return pe_exit(dctx,ret);
+}