From 13af96cec2fb1461bc0680e4106d5132dce72b47 Mon Sep 17 00:00:00 2001
From: Holden Rohrer <hr@hrhr.dev>
Date: Tue, 31 Mar 2020 10:57:01 -0400
Subject: a partial attempt at typesetting

---
 badroff.c | 41 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/badroff.c b/badroff.c
index adf3e41..ed84760 100644
--- a/badroff.c
+++ b/badroff.c
@@ -15,6 +15,12 @@ FILE* getfile(int argc, char** argv){
         return stdin;
 }
 
+char* chrmult(char c, size_t ct){
+    char* str = malloc(sizeof(char)*(ct+1)); str[ct] = 0;
+    memset(str, c, ct); 
+    return str;
+}
+
 // file read & buffer fill helpers
 
 FILE* in;
@@ -48,9 +54,9 @@ char* center(char* txt){
     int max = width/2 + len/2; // excluding terminator
     int min = max-len+1; // first index of *txt
     char* str = malloc(sizeof(char)*(max + 1));
-    str[max] = 0;
-    for (int i=0; i < min; i++) str[i] = ' ';
+    memset(str, ' ', min);
     memcpy(str+min, txt, len);
+    str[max] = 0;
     return str;
 }
 char* setwidth(char* txt){
@@ -80,8 +86,37 @@ char* cmd(void){
 
 // normal typesetting 
 
+char* cleanup(char* line){ // cleans up trailing whitespace && ^\n$
+    for (ws = len-1; line[ws] == ' '; ws--, len--); // rethink
+    if (ws < len-1){
+        line[ws] = '\n'
+        line[ws+1] = '\0';
+    } else if (line[len-1] != '\n'){
+        len++;
+        line = realloc(line, len);
+    }
+    if (line[len-1] != '\n'){
+        line[len-1] = '\n';
+        line[len] = '\0';
+    }
+    return line;
+}
+
+char* fold(char* line){ // inserts \n to limit line length
+    
+}
+
 char* typeset(void){
-    return popstrbuf(inbuf, chrfill('\n'));
+    size_t len; size_t nl;
+    for (nl = 0; (len = chrfill('\n')) == 1; nl++)
+        popstrbuf(inbuf, len);
+    if (nl) return chrmult('\n', nl+1);
+    char* line = popstrbuf(inbuf, len);
+    size_t ws;
+    line = cleanup(line);
+    if (brk && line[len-1] == '\n') line[len-1] = ' ';
+    if (brk) for (; *line == ' '; line++); //remove preceding whitespace
+    return fold(line);
 }
 
 // a parser to choose when to typeset and when to run a command
-- 
cgit