Build receivers, filters and writers without -h and -V support.

[paraslash.git] / interactive.c

diff --git a/interactive.c b/interactive.c
index a18d82b717846d1deeec01c3dcaf88587837bc43..f281901248e3aebe878553220dda938d1c3fbece 100644 (file)
--- a/interactive.c
+++ b/interactive.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2012 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2011-2013 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -31,6 +31,7 @@ struct i9e_private {
        char empty_line[1000];
        struct task task;
        struct btr_node *stdout_btrn;
+       bool last_write_was_status;
        bool line_handler_running;
        bool input_eof;
        bool caught_sigint;
@@ -306,12 +307,12 @@ static void i9e_line_handler(char *line)
        }
 }
 
-static void i9e_post_select(__a_unused struct sched *s, struct task *t)
+static int i9e_post_select(__a_unused struct sched *s, __a_unused struct task *t)
 {
        int ret;
        struct i9e_client_info *ici = i9ep->ici;
        char *buf;
-       size_t sz;
+       size_t sz, consumed = 0;
 
        ret = -E_I9E_EOF;
        if (i9ep->input_eof)
@@ -333,16 +334,24 @@ static void i9e_post_select(__a_unused struct sched *s, struct task *t)
        }
        if (ret == 0)
                goto out;
+again:
        sz = btr_next_buffer(i9ep->stdout_btrn, &buf);
        if (sz == 0)
                goto out;
+       if (i9ep->last_write_was_status)
+               fprintf(i9ep->stderr_stream, "\n");
+       i9ep->last_write_was_status = false;
        ret = xwrite(ici->fds[1], buf, sz);
        if (ret < 0)
                goto rm_btrn;
        btr_consume(i9ep->stdout_btrn, ret);
+       consumed += ret;
+       if (ret == sz && consumed < 10000)
+               goto again;
        goto out;
 rm_btrn:
        if (i9ep->stdout_btrn) {
+               wipe_bottom_line();
                btr_remove_node(&i9ep->stdout_btrn);
                rl_set_keymap(i9ep->standard_km);
                rl_set_prompt(i9ep->ici->prompt);
@@ -352,7 +361,7 @@ rm_btrn:
                wipe_bottom_line();
 out:
        i9ep->caught_sigint = false;
-       t->error = ret;
+       return ret;
 }
 
 static void i9e_pre_select(struct sched *s, __a_unused struct task *t)
@@ -503,6 +512,41 @@ __printf_2_3 void i9e_log(int ll, const char* fmt,...)
        vfprintf(i9ep->stderr_stream, fmt, argp);
        va_end(argp);
        reset_line_state();
+       i9ep->last_write_was_status = false;
+}
+
+/**
+ * Print the current status to stderr.
+ *
+ * \param buf The text to print.
+ * \param len The number of bytes in \a buf.
+ *
+ * This clears the bottom line, moves to the beginning of the line and prints
+ * the given text. If the length of this text exceeds the width of the
+ * terminal, the text is shortened by leaving out a part in the middle.
+ */
+void ie9_print_status_bar(char *buf, unsigned len)
+{
+       size_t x = i9ep->num_columns, y = (x - 4) / 2;
+
+       assert(x >= 6);
+       if (len > x) {
+               buf[y] = '\0';
+               fprintf(i9ep->stderr_stream, "\r%s", buf);
+               fprintf(i9ep->stderr_stream, " .. ");
+               fprintf(i9ep->stderr_stream, "%s", buf + len - y);
+       } else {
+               char scratch[1000];
+
+               y = x - len;
+               scratch[0] = '\r';
+               strcpy(scratch + 1, buf);
+               memset(scratch + 1 + len, ' ', y);
+               scratch[1 + len + y] = '\r';
+               scratch[2 + len + y] = '\0';
+               fprintf(i9ep->stderr_stream, "\r%s", scratch);
+       }
+       i9ep->last_write_was_status = true;
 }
 
 /**