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shared/pretty-print: add highlighting

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek
2023-10-14 18:49:35 +02:00
parent 063c838206
commit a9e6803582
1 changed files with 29 additions and 6 deletions
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35
src/shared/pretty-print.c
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@@ -131,6 +131,22 @@ int terminal_urlify_man(const char *page, const char *section, char **ret) {
return terminal_urlify(url, text, ret);
}
typedef enum {
LINE_SECTION,
LINE_COMMENT,
LINE_NORMAL,
} LineType;
static LineType classify_line_type(const char *line, CatFlags flags) {
const char *t = skip_leading_chars(line, WHITESPACE);
if ((flags & CAT_FORMAT_HAS_SECTIONS) && *t == '[')
return LINE_SECTION;
if (IN_SET(*t, '#', ';', '\0'))
return LINE_COMMENT;
return LINE_NORMAL;
}
static int cat_file(const char *filename, bool newline, CatFlags flags) {
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *urlified = NULL, *section = NULL;
@@ -160,26 +176,33 @@ static int cat_file(const char *filename, bool newline, CatFlags flags) {
if (r == 0)
break;
LineType line_type = classify_line_type(line, flags);
if (flags & CAT_TLDR) {
const char *t = skip_leading_chars(line, WHITESPACE);
if ((flags & CAT_FORMAT_HAS_SECTIONS) && *t == '[') {
if (line_type == LINE_SECTION) {
/* The start of a section, let's not print it yet. */
free_and_replace(section, line);
continue;
}
if (IN_SET(*t, '#', ';', '\0'))
if (line_type == LINE_COMMENT)
continue;
/* Before we print the actual line, print the last section header */
if (section) {
puts(section);
printf("%s%s%s\n",
ansi_highlight_cyan(),
section,
ansi_normal());
section = mfree(section);
}
}
puts(line);
printf("%s%s%s\n",
line_type == LINE_SECTION ? ansi_highlight_cyan() :
line_type == LINE_COMMENT ? ansi_highlight_grey() :
"",
line,
line_type != LINE_NORMAL ? ansi_normal() : "");
}
return 0;