[hackers] [scroll][PATCH] hotkey to dump buffer to file (like screen hardcopy)

[Kaspars Vandans]

From: kaspars <kaspars.vand...@gmail.com>

---
 TODO         |  1 -
 config.def.h |  4 ++++
 scroll.c     | 25 ++++++++++++++++++++++++-
 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/TODO b/TODO
index 84ffd33..dff0ea6 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,2 @@
  * strlen function which is aware of unicode
  * handle wrapping lines in scrolling line count correctly
- * hotkey to dump buffer to file (like screen hardcopy)
diff --git a/config.def.h b/config.def.h
index 536db70..7d961d5 100644
--- a/config.def.h
+++ b/config.def.h
@@ -13,4 +13,8 @@ struct rule rules[] = {
        /* mouse binding shadows ^E and ^Y, so it's disabled by default */
        //{"\031",        SCROLL_UP,    1},     /* mouse wheel up */
        //{"\005",        SCROLL_DOWN,  1},     /* mouse wheel Down */
+       /* an ok UX requires ansifilter, so it's disabled by default*/
+       //{"\033v",       PIPE_OUTSIDE, 0},     /* [Alt]   + v ; lines ignored 
*/
 };
+
+const char pipecmd[] = "ansifilter > scroll_output.txt";
diff --git a/scroll.c b/scroll.c
index 8f66d54..7892a88 100644
--- a/scroll.c
+++ b/scroll.c
@@ -54,7 +54,7 @@ static bool doredraw = false; /* redraw upon sigwinch */
 
 struct rule {
        const char *seq;
-       enum {SCROLL_UP, SCROLL_DOWN} event;
+       enum {SCROLL_UP, SCROLL_DOWN, PIPE_OUTSIDE} event;
        short lines;
 };
 
@@ -389,6 +389,27 @@ jumpdown(char *buf, size_t size)
        scrolldown(buf, size, ws.ws_row);
 }
 
+void 
+pipeoutside(void)
+{
+       FILE *pipe;
+       struct line *current;
+
+       pipe = popen(pipecmd, "w");
+       if (!pipe) {
+               perror("popen");
+               return;
+       }
+
+       current = TAILQ_LAST(&head, tailhead);
+       while (current != NULL) {
+               fwrite(current->buf, 1, current->size, pipe);
+               current = TAILQ_PREV(current, tailhead, entries);
+       }
+
+       pclose(pipe);
+}
+
 void
 usage(void) {
        die("usage: %s [-Mvh] [-m mem] [program]", argv0);
@@ -523,6 +544,8 @@ main(int argc, char *argv[])
                                        if (rules[i].event == SCROLL_DOWN)
                                                scrolldown(buf, len,
                                                    rules[i].lines);
+                                       if (rules[i].event == PIPE_OUTSIDE)
+                                               pipeoutside();
                                        goto out;
                                }
                        }
-- 
2.51.2