[PATCH v1 1/4] perf browser: Add a new 'dump' flag

[Jin Yao]

We have a new requirement to provide the TUI output option for
non-interactive mode. For example, write the TUI output to stdio directly.

This patch creates a new flag 'dump' in struct ui_browser. Once it's on,
for the formatted buffer, we just print it on stdio.

Signed-off-by: Jin Yao <yao....@linux.intel.com>
---
 tools/perf/ui/browser.c | 38 +++++++++++++++++++++++++++++++++-----
 tools/perf/ui/browser.h |  1 +
 2 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 63399af..3534c6c 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -41,8 +41,13 @@ int ui_browser__set_color(struct ui_browser *browser, int 
color)
 void ui_browser__set_percent_color(struct ui_browser *browser,
                                   double percent, bool current)
 {
-        int color = ui_browser__percent_color(browser, percent, current);
-        ui_browser__set_color(browser, color);
+       int color;
+
+       if (browser->dump)
+               return;
+
+       color = ui_browser__percent_color(browser, percent, current);
+       ui_browser__set_color(browser, color);
 }
 
 void ui_browser__gotorc(struct ui_browser *browser, int y, int x)
@@ -50,10 +55,27 @@ void ui_browser__gotorc(struct ui_browser *browser, int y, 
int x)
        SLsmg_gotorc(browser->y + y, browser->x + x);
 }
 
+static void write_nstring(const char *msg, unsigned int width)
+{
+       unsigned int len = strlen(msg);
+       unsigned int i = 0;
+
+       while (i < len && i < width) {
+               putchar(msg[i]);
+               i++;
+       }
+
+       while (i++ < width)
+               putchar(' ');
+}
+
 void ui_browser__write_nstring(struct ui_browser *browser __maybe_unused, 
const char *msg,
                               unsigned int width)
 {
-       slsmg_write_nstring(msg, width);
+       if (browser->dump)
+               write_nstring(msg, width);
+       else
+               slsmg_write_nstring(msg, width);
 }
 
 void ui_browser__printf(struct ui_browser *browser __maybe_unused, const char 
*fmt, ...)
@@ -61,7 +83,10 @@ void ui_browser__printf(struct ui_browser *browser 
__maybe_unused, const char *f
        va_list args;
 
        va_start(args, fmt);
-       slsmg_vprintf(fmt, args);
+       if (browser->dump)
+               vprintf(fmt, args);
+       else
+               slsmg_vprintf(fmt, args);
        va_end(args);
 }
 
@@ -496,7 +521,10 @@ unsigned int ui_browser__list_head_refresh(struct 
ui_browser *browser)
 
        list_for_each_from(pos, head) {
                if (!browser->filter || !browser->filter(browser, pos)) {
-                       ui_browser__gotorc(browser, row, 0);
+                       if (!browser->dump)
+                               ui_browser__gotorc(browser, row, 0);
+                       else if (row > 0)
+                               printf("\n");
                        browser->write(browser, pos, row);
                        if (++row == browser->rows)
                                break;
diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index 03e1734..66d9405 100644
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -28,6 +28,7 @@ struct ui_browser {
        u32           nr_entries;
        bool          navkeypressed;
        bool          use_navkeypressed;
+       bool          dump;
 };
 
 int  ui_browser__set_color(struct ui_browser *browser, int color);
-- 
2.7.4