*
*/
+#include <ctype.h> // isalnum
#include <locale.h> // setlocale
-#include <stdlib.h>
#include <string.h> // strchr
-#include <unistd.h>
+#include <unistd.h> // usleep
#include "viewer.h"
fprintf(stderr, "Error: Terminal width (%i columns) too small. Need at least %i columns.\n", COLS, i);
fprintf(stderr, "You may need to shorten some lines by inserting line breaks.\n");
- return(1);
+ return 1;
}
// set max_cols
- max_cols = (i > max_cols) ? i : max_cols;
+ max_cols = MAX(i, max_cols);
// iterate to next line
offset = prev_blank(line->text, offset + COLS);
lc++;
}
// set max_cols one last time
- max_cols = (i > max_cols) ? i : max_cols;
+ max_cols = MAX(i, max_cols);
} else {
// set max_cols
- max_cols = (line->length > max_cols) ? line->length : max_cols;
+ max_cols = MAX(line->length, max_cols);
}
lc++;
line = line->next;
}
- max_lines = (lc > max_lines) ? lc : max_lines;
+ max_lines = MAX(lc, max_lines);
slide = slide->next;
}
endwin();
// print error
- fprintf(stderr, "Error: Terminal heigth (%i lines) too small. Need at least %i lines.\n", LINES, max_lines + bar_top + bar_bottom);
+ fprintf(stderr, "Error: Terminal height (%i lines) too small. Need at least %i lines.\n", LINES, max_lines + bar_top + bar_bottom);
fprintf(stderr, "You may need to add additional horizontal rules ('***') to split your file in shorter slides.\n");
- return(1);
+ return 1;
}
// disable cursor
init_pair(CP_YELLOW, 208, trans);
// enable color fading
- if(!nofade) fade = 1;
+ if(!nofade)
+ fade = true;
// 8 color mode
} else {
"%d / %d", sc, deck->slides);
// make header + fooder visible
+ wrefresh(content);
wrefresh(stdscr);
line = slide->line;
// print lines
while(line) {
add_line(content, l, (COLS - max_cols) / 2, line, max_cols, colors);
+ l += (line->length / COLS) + 1;
line = line->next;
- l++;
}
// make content visible
fade_in(content, trans, colors, invert);
// re-enable fading after any undefined key press
- if(COLORS == 256 && !nofade) fade = 1;
+ if(COLORS == 256 && !nofade)
+ fade = true;
// wait for user input
c = getch();
// show previous slide
case KEY_UP:
case KEY_LEFT:
+ case KEY_PPAGE:
case 8: // BACKSPACE (ascii)
case 127: // BACKSPACE (xterm)
case 263: // BACKSPACE (getty)
slide = slide->prev;
sc--;
} else {
- fade = 0;
+ fade = false;
}
break;
// show next slide
case KEY_DOWN:
case KEY_RIGHT:
+ case KEY_NPAGE:
case '\n': // ENTER
case ' ': // SPACE
case 'j':
slide = slide->next;
sc++;
} else {
- fade = 0;
+ fade = false;
}
break;
}
} else {
// disable fading if slide n doesn't exist
- fade = 0;
+ fade = false;
}
break;
// quit
case 'q':
// do not fade out on exit
- fade = 0;
- slide = (void*)0;
+ fade = false;
+ slide = NULL;
break;
default:
// disable fading on undefined key press
- fade = 0;
+ fade = false;
break;
}
endwin();
- return(0);
+ return 0;
}
void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colors) {
// IS_UNORDERED_LIST_3
if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_3)) {
offset = next_nonblank(line->text, 0);
- char prompt[10];
- strcpy(&prompt[0], CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? "| " : " ");
- strcpy(&prompt[3], CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)? "| " : " ");
- strcpy(&prompt[6], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_3)? "+- " : "`- ");
+ char prompt[13];
+ strcpy(&prompt[0], CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? " | " : " ");
+ strcpy(&prompt[4], CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)? " | " : " ");
+
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ strcpy(&prompt[8], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_3)? " | " : " ");
+ } else {
+ strcpy(&prompt[8], " +- ");
+ offset += 2;
+ }
+
wprintw(window,
"%s", prompt);
- inline_display(window, &line->text->text[offset + 2], colors);
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->text[offset], colors);
// IS_UNORDERED_LIST_2
} else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_2)) {
offset = next_nonblank(line->text, 0);
- char prompt[7];
- strcpy(&prompt[0], CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? "| " : " ");
- strcpy(&prompt[3], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_2)? "+- " : "`- ");
+ char prompt[9];
+ strcpy(&prompt[0], CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)? " | " : " ");
+
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ strcpy(&prompt[4], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_2)? " | " : " ");
+ } else {
+ strcpy(&prompt[4], " +- ");
+ offset += 2;
+ }
+
wprintw(window,
"%s", prompt);
- inline_display(window, &line->text->text[offset + 2], colors);
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->text[offset], colors);
// IS_UNORDERED_LIST_1
} else if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_1)) {
offset = next_nonblank(line->text, 0);
- char prompt[4];
- strcpy(&prompt[0], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_1)? "+- " : "`- ");
+ char prompt[5];
+
+ if(CHECK_BIT(line->bits, IS_UNORDERED_LIST_EXT)) {
+ strcpy(&prompt[0], line->next && CHECK_BIT(line->next->bits, IS_UNORDERED_LIST_1)? " | " : " ");
+ } else {
+ strcpy(&prompt[0], " +- ");
+ offset += 2;
+ }
+
wprintw(window,
"%s", prompt);
- inline_display(window, &line->text->text[offset + 2], colors);
+ if(!CHECK_BIT(line->bits, IS_CODE))
+ inline_display(window, &line->text->text[offset], colors);
+ }
// IS_CODE
- } else if(CHECK_BIT(line->bits, IS_CODE)) {
+ if(CHECK_BIT(line->bits, IS_CODE)) {
// set static offset for code
offset = CODE_INDENT;
// print whole lines
wprintw(window,
"%s", &line->text->text[offset]);
+ }
- // IS_H1 || IS_H2
- } else if(CHECK_BIT(line->bits, IS_H1) || CHECK_BIT(line->bits, IS_H2)) {
-
- // set headline color
- if(colors)
- wattron(window, COLOR_PAIR(CP_BLUE));
-
- // enable underline for H1
- if(CHECK_BIT(line->bits, IS_H1))
- wattron(window, A_UNDERLINE);
-
- // skip hashes
- while(line->text->text[offset] == '#')
- offset = next_word(line->text, offset);
-
- // print whole lines
- wprintw(window,
- "%s", &line->text->text[offset]);
-
- wattroff(window, A_UNDERLINE);
-
- } else {
+ if(!CHECK_BIT(line->bits, IS_UNORDERED_LIST_1) &&
+ !CHECK_BIT(line->bits, IS_UNORDERED_LIST_2) &&
+ !CHECK_BIT(line->bits, IS_UNORDERED_LIST_3) &&
+ !CHECK_BIT(line->bits, IS_CODE)) {
// IS_QUOTE
if(CHECK_BIT(line->bits, IS_QUOTE)) {
if(line->text->text[offset] == ' ')
offset = next_word(line->text, offset);
}
- }
- inline_display(window, &line->text->text[offset], colors);
+ inline_display(window, &line->text->text[offset], colors);
+ } else {
+
+ // IS_CENTER
+ if(CHECK_BIT(line->bits, IS_CENTER)) {
+ if(line->length < max_cols) {
+ wmove(window, y, x + ((max_cols - line->length) / 2));
+ }
+ }
+
+ // IS_H1 || IS_H2
+ if(CHECK_BIT(line->bits, IS_H1) || CHECK_BIT(line->bits, IS_H2)) {
+
+ // set headline color
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_BLUE));
+
+ // enable underline for H1
+ if(CHECK_BIT(line->bits, IS_H1))
+ wattron(window, A_UNDERLINE);
+
+ // skip hashes
+ while(line->text->text[offset] == '#')
+ offset = next_word(line->text, offset);
+
+ // print whole lines
+ wprintw(window,
+ "%s", &line->text->text[offset]);
+
+ wattroff(window, A_UNDERLINE);
+
+ // no line-wide markdown
+ } else {
+
+ inline_display(window, &line->text->text[offset], colors);
+ }
+ }
}
// fill rest off line with spaces
void inline_display(WINDOW *window, const char *c, const int colors) {
const static char *special = "\\*_`"; // list of interpreted chars
+ const char *i = c; // iterator
cstack_t *stack = cstack_init();
+
// for each char in line
- for(; *c; c++) {
+ for(; *i; i++) {
// if char is in special char list
- if(strchr(special, *c)) {
+ if(strchr(special, *i)) {
// closing special char (or second backslash)
- if((stack->top)(stack, *c)) {
+ // only if not followed by :alnum:
+ if((stack->top)(stack, *i) &&
+ (!isalnum((int)i[1]) || *(i + 1) == '\0' || *i == '\\')) {
- switch(*c) {
+ switch(*i) {
// print escaped backslash
case '\\':
- wprintw(window, "%c", *c);
+ wprintw(window, "%c", *i);
break;
// disable highlight
case '*':
// treat special as regular char
} else if((stack->top)(stack, '\\')) {
- wprintw(window, "%c", *c);
+ wprintw(window, "%c", *i);
// remove backslash from stack
(stack->pop)(stack);
// opening special char
} else {
- switch(*c) {
- // enable highlight
- case '*':
- if(colors)
- wattron(window, COLOR_PAIR(CP_RED));
- break;
- // enable underline
- case '_':
- wattron(window, A_UNDERLINE);
- break;
- // enable inline code
- case '`':
- if(colors)
- wattron(window, COLOR_PAIR(CP_BLACK));
- break;
- // do nothing for backslashes
- }
- // push special char to stack
- (stack->push)(stack, *c);
+ // emphasis or code span can start after new-line or space only
+ // and of cause after another emphasis markup
+ if(*(i - 1) == ' ' ||
+ ((*(i - 1) == '_' || *(i - 1) == '*') && (*(i - 2) == ' ' || (i - 1) == c)) ||
+ *i == '\\' ||
+ i == c) {
+
+ switch(*i) {
+ // enable highlight
+ case '*':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_RED));
+ break;
+ // enable underline
+ case '_':
+ wattron(window, A_UNDERLINE);
+ break;
+ // enable inline code
+ case '`':
+ if(colors)
+ wattron(window, COLOR_PAIR(CP_BLACK));
+ break;
+ // do nothing for backslashes
+ }
+
+ // push special char to stack
+ (stack->push)(stack, *i);
+
+ } else {
+ wprintw(window, "%c", *i);
+ }
}
} else {
(stack->pop)(stack);
// print regular char
- wprintw(window, "%c", *c);
+ wprintw(window, "%c", *i);
}
}