make mdv center

1 files changed, 40 insertions, 13 deletions

diff --git a/core/mdv.c b/core/mdv.c
index 25b7b28..c4e0f99 100644
--- a/core/mdv.c
+++ b/core/mdv.c
@@ -3,8 +3,6 @@
 #include "../lib/tctl/tctl.h"
 #include "../lib/aec/aec.h"
 
-#define MAX_WIDTH 80
-
 #define TOGGLE(mask, type, sgron, sgroff) \
 					if (mask & type) { \
 						mask ^= type; \
@@ -16,6 +14,8 @@
 
 u16 heading_numbers[6] = { 0 };
 window_size_t ws;
+u8 left_padding;
+u8 MAX_WIDTH = 80;
 
 enum Style {
 	ITALIC       = 1,
@@ -25,6 +25,24 @@ enum Style {
 };
 
 
+void put_leftpadding()
+{
+	for (int i = 0; i < left_padding; ++i) {
+		putchar(' ');
+	}
+}
+
+
+void wstdp(const char *buf)
+{
+	for (; *buf; ++buf) {
+		putchar(*buf);
+		if (*buf == '\n')
+			put_leftpadding();
+	}
+}
+
+
 void next_heading(int type)
 {
 	heading_numbers[type]++;
@@ -46,7 +64,7 @@ void show_box()
 
 	wstd("┌");
 	for (int i = 0; i < MAX_WIDTH - 3; ++i) wstd("─");
-	wstd("┐\n│ ");
+	wstdp("┐\n│ ");
 
 	while (use_backup || read(STDIN_FD, &c, 1)) {
 		if (use_backup) {
@@ -65,12 +83,12 @@ void show_box()
 			
 			use_backup = 3;
 
-			wstd(" │\n│ ");
+			wstdp(" │\n│ ");
 		} else {
 			++width;
 
 			if (width == MAX_WIDTH - 4) {
-				wstd(" │\n│ ");
+				wstdp(" │\n│ ");
 				width = 1;
 			}
 
@@ -78,9 +96,9 @@ void show_box()
 		}
 	}
 
-	wstd(" │\n└");
+	wstdp(" │\n└");
 	for (int i = 0; i < MAX_WIDTH - 3; ++i) wstd("─");
-	wstd("┘\n\n");
+	wstdp("┘\n\n");
 }
 
 
@@ -96,7 +114,7 @@ void show_and_replace_leading_char(char leading, char *replace)
 				break;
 
 			last_was_newline = 1;
-			wstd("\n  ");
+			wstdp("\n  ");
 		} else {
 			last_was_newline = 0;
 
@@ -107,7 +125,7 @@ void show_and_replace_leading_char(char leading, char *replace)
 		}
 	}
 
-	wstd("\n");
+	wstdp("\n");
 }
 
 
@@ -125,14 +143,14 @@ void show_numbered_list()
 				break;
 
 			last_was_newline = 1;
-			wstd("\n  ");
+			wstdp("\n  ");
 		} else {
 			last_was_newline = 0;
 			putchar(c);
 		}
 	}
 
-	wstd("\n");
+	wstdp("\n");
 }
 
 
@@ -152,7 +170,7 @@ void show_paragraph()
 		} else {
 			last_was_newline = 0;
 			if (width == MAX_WIDTH) {
-				wstd("\n");
+				wstdp("\n");
 				width = 0;
 			}
 
@@ -181,6 +199,7 @@ void show_paragraph()
 	}
 
 	wstdf("\n\n%S", SGR_RESET);
+	put_leftpadding();
 }
 
 
@@ -209,6 +228,7 @@ void show_heading()
 
 	while (read(STDIN_FD, &c, 1) && c != '\n') putchar(c);
 	wstdf("\n\n%S", SGR_RESET);
+	put_leftpadding();
 }
 
 int main(int argc, char **argv)
@@ -218,10 +238,15 @@ int main(int argc, char **argv)
 		return -1;
 	}
 
-	ws = tctl_get_window_size();
+	ws = tctl_get_fd_window_size(STDERR_FD);
+	if (ws.width < MAX_WIDTH)
+		MAX_WIDTH = ws.width;
+	left_padding = (ws.width - MAX_WIDTH) / 2;
 
 	char c;
 
+	put_leftpadding();
+
 	while (read(STDIN_FD, &c, 1)) {
 		switch(c) {
 			case '\n': break;
@@ -234,5 +259,7 @@ int main(int argc, char **argv)
 		}
 	}
 
+	putchar('\n');
+
 	return 0;
 }