From 0d3dde49e65c9de9dff41933ceb64fa28635499d Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 28 Nov 2015 07:14:21 -0500
Subject: pretty printer: yaml support: initial implementation.

---
 include/perk/perk_output.h              |  1 +
 src/driver/pe_driver_ctx.c              | 13 +++++++++++++
 src/output/pe_output_import_libraries.c | 29 +++++++++++++++++++++++++----
 3 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/include/perk/perk_output.h b/include/perk/perk_output.h
index d7e3b9a..91c8aee 100644
--- a/include/perk/perk_output.h
+++ b/include/perk/perk_output.h
@@ -16,5 +16,6 @@
 #define PERK_PRETTY_TABLE		PERK_PRETTY(0x00000002)
 #define PERK_PRETTY_READOBJ		PERK_PRETTY(0x00000004)
 #define PERK_PRETTY_OBJDUMP		PERK_PRETTY(0x00000008)
+#define PERK_PRETTY_YAML		PERK_PRETTY(0x00000010)
 
 #endif
diff --git a/src/driver/pe_driver_ctx.c b/src/driver/pe_driver_ctx.c
index 97ff3fa..32e0819 100644
--- a/src/driver/pe_driver_ctx.c
+++ b/src/driver/pe_driver_ctx.c
@@ -8,6 +8,7 @@ enum app_tags {
 	TAG_HELP,
 	TAG_VERSION,
 	TAG_OUTPUT,
+	TAG_PRETTY,
 	TAG_EXPSYMS,
 	TAG_IMPLIBS,
 	TAG_IMPSYMS,
@@ -24,6 +25,9 @@ static const struct argv_option options[] = {
 	{"output",	'o',TAG_OUTPUT,	ARGV_OPTARG_REQUIRED,	0,"<file>",
 								"write output to %s"},
 
+	{"pretty",	'p',TAG_PRETTY,	ARGV_OPTARG_REQUIRED,	"yaml",0,
+								"format output for parsing by %s"},
+
 	{"expsyms",	'e',TAG_EXPSYMS,ARGV_OPTARG_NONE,	0,0,
 								"print exported symbols" },
 
@@ -127,6 +131,7 @@ int pe_get_driver_ctx(
 	uint64_t		fflags;
 	const char *		program;
 	const char *		output;
+	const char *		pretty;
 	int			fdout;
 
 	if (!(meta = argv_get(argv,options,pe_argv_flags(flags))))
@@ -135,6 +140,7 @@ int pe_get_driver_ctx(
 	dflags	= 0;
 	fflags	= 0;
 	output	= 0;
+	pretty	= 0;
 	nunits	= 0;
 	program = argv_program_name(argv[0]);
 
@@ -157,6 +163,10 @@ int pe_get_driver_ctx(
 					output = entry->arg;
 					break;
 
+				case TAG_PRETTY:
+					pretty = entry->arg;
+					break;
+
 				case TAG_EXPSYMS:
 					fflags |= PERK_OUTPUT_EXPORT_SYMS;
 					break;
@@ -184,6 +194,9 @@ int pe_get_driver_ctx(
 	if (!ctx)
 		return pe_get_driver_ctx_fail(meta);
 
+	if (pretty && !strcmp(pretty,"yaml"))
+		fflags |= PERK_PRETTY_YAML;
+
 	ctx->program		= program;
 	ctx->cctx.drvflags	= dflags;
 	ctx->cctx.fmtflags	= fflags;
diff --git a/src/output/pe_output_import_libraries.c b/src/output/pe_output_import_libraries.c
index 1e47d81..2b864fb 100644
--- a/src/output/pe_output_import_libraries.c
+++ b/src/output/pe_output_import_libraries.c
@@ -8,13 +8,32 @@
 #include <perk/perk_output.h>
 #include "perk_output_impl.h"
 
+enum impsym_prefix_tag {
+	IMPSYM_PREFIX_DEFAULT,
+	IMPSYM_PREFIX_YAML
+};
+
+static const char * const impsym_prefix_arr[] = {
+	"--> ",
+	"- "
+};
+
+static const char * pretty_impsym_prefix(const struct pe_common_ctx * cctx)
+{
+	if (cctx->fmtflags & PERK_PRETTY_YAML)
+		return impsym_prefix_arr[IMPSYM_PREFIX_YAML];
+	else
+		return impsym_prefix_arr[IMPSYM_PREFIX_DEFAULT];
+}
+
 int pe_output_import_libraries(
 	const struct pe_image_meta *	m,
 	const struct pe_common_ctx *	cctx,
 	FILE *				fout)
 {
-	FILE *	ftmp;
-	int	i,j;
+	FILE *		ftmp;
+	int		i,j;
+	const char *	impsym_prefix;
 
 	if (!m->summary.num_of_implibs)
 		return 0;
@@ -22,6 +41,8 @@ int pe_output_import_libraries(
 	if (!(fout = pe_output_prolog(cctx,fout,&ftmp)))
 		return -1;
 
+	impsym_prefix = pretty_impsym_prefix(cctx);
+
 	for (i=0; i<m->summary.num_of_implibs; i++) {
 		if (cctx->fmtflags & PERK_OUTPUT_IMPORT_SYMS)
 			fprintf(fout,"%s:\n",m->idata[i].name);
@@ -31,8 +52,8 @@ int pe_output_import_libraries(
 		if (cctx->fmtflags & PERK_OUTPUT_IMPORT_SYMS)
 			for (j=0; j<m->idata[i].count; j++)
 				if (m->idata[i].items[j].name)
-					fprintf(fout,"==> %s\n",
-						m->idata[i].items[j].name);
+					fprintf(fout,"%s%s\n",
+						impsym_prefix,m->idata[i].items[j].name);
 	}
 
 	return pe_output_epilog(0,ftmp);
-- 
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