neatvi: add package at 07 to core

neatvi is added to the core as it is a slim editor that can be used
in the base. Since busybox is not exactly portable outside of a Linux
environment, I might be adding this package to the base as well.

1 files changed, 136 insertions, 0 deletions

diff --git a/core/neatvi/files/conf.h b/core/neatvi/files/conf.h
new file mode 100644
index 00000000..218c02ca
--- /dev/null
+++ b/core/neatvi/files/conf.h
@@ -0,0 +1,136 @@
+/* neatvi configuration file */
+
+/* access mode of new files */
+#define MKFILE_MODE		0644
+
+/* map file names to file types */
+static struct filetype {
+	char *ft;		/* file type */
+	char *pat;		/* file name pattern */
+} filetypes[] = {
+	{"c", "\\.[hc]$"},				/* C */
+	{"roff", "\\.(ms|tr|roff|tmac|[1-9])$"},	/* troff */
+	{"tex", "\\.tex$"},				/* tex */
+	{"msg", "letter$|mbox$|mail$"},			/* email */
+	{"md", "\\.(md|txt)$"},                         /* markdown */
+	{"mk", "Makefile$|makefile$|\\.mk$"},		/* makefile */
+	{"sh", "build|\\.sh$"},				/* shell script */
+	{"nm", "\\.nm$"},				/* neatmail */
+};
+
+/* syntax highlighting patterns */
+static struct highlight {
+	char *ft;		/* the filetype of this pattern */
+	int att[16];		/* attributes of the matched groups */
+	char *pat;		/* regular expression */
+	int end;		/* the group ending this pattern */
+} highlights[] = {
+	{"c", {5}, "\\<(signed|unsigned|char|short|int|long|float|double|void|struct|enum|union|typedef)\\>"},
+	{"c", {5}, "\\<(static|extern|register)\\>"},
+	{"c", {4}, "\\<(return|for|while|if|else|do|sizeof|goto|switch|case|default|break|continue)\\>"},
+	{"c", {2 | SYN_IT}, "//.*$"},
+	{"c", {2 | SYN_IT}, "/\\*([^*]|\\*+[^*/])*\\*+/"},
+	{"c", {6}, "^#[ \t]*[a-zA-Z0-9_]+"},
+	{"c", {0, SYN_BD}, "([a-zA-Z][a-zA-Z0-9_]+)\\(", 1},
+	{"c", {4}, "\"([^\"]|\\\\\")*\""},
+	{"c", {4}, "'([^\\]|\\\\.)'"},
+	{"c", {4}, "[-+]?\\<(0[xX][0-9a-fA-F]+|[0-9]+)\\>"},
+
+	{"roff", {4, 0, 5 | SYN_BD, 4 | SYN_BD, 5 | SYN_BD, 4 | SYN_BD},
+		"^[.'][ \t]*((SH.*)|(de) (.*)|([^ \t\\]{2,}))?.*$", 1},
+	{"roff", {2 | SYN_IT}, "\\\\\".*$"},
+	{"roff", {3}, "\\\\{1,2}[*$fgkmns]([^[(]|\\(..|\\[[^]]*\\])"},
+	{"roff", {3}, "\\\\([^[(*$fgkmns]|\\(..|\\[[^]]*\\])"},
+	{"roff", {3}, "\\$[^$]+\\$"},
+
+	{"tex", {4 | SYN_BD, 0, 3, 0, 5},
+		"\\\\[^[{ \t]+(\\[([^]]+)\\])?(\\{([^}]*)\\})?"},
+	{"tex", {3}, "\\$[^$]+\\$"},
+	{"tex", {2 | SYN_IT}, "%.*$"},
+
+	/* mail */
+	{"msg", {6 | SYN_BD}, "^From .*20..$"},
+	{"msg", {6 | SYN_BD, 4 | SYN_BD}, "^Subject: (.*)$"},
+	{"msg", {6 | SYN_BD, 2 | SYN_BD}, "^From: (.*)$"},
+	{"msg", {6 | SYN_BD, 5 | SYN_BD}, "^To: (.*)$"},
+	{"msg", {6 | SYN_BD, 5 | SYN_BD}, "^Cc: (.*)$"},
+	{"msg", {6 | SYN_BD}, "^[A-Z][-A-Za-z]+: .+$"},
+	{"msg", {2 | SYN_IT}, "^> .*$"},
+
+	/* markdown */
+	{"md", {0}, "^[[:space:]]{4}.*"},
+	{"md", {4}, "^[[:space:]]*#+[[:space:]].*"},
+	{"md", {4}, "^[[:space:]]*-+$"},
+	{"md", {4}, "^[[:space:]]*=+$"},
+	{"md", {8}, "^[[:space:]]*```.*"},
+	{"md", {3}, "`[^`]+`"},
+	{"md", {7}, "\\*\\*[^*]+\\*\\*"},
+	{"md", {7 | SYN_IT}, "\\*[^`*]+\\*"},
+	{"md", {7 | SYN_IT}, "~~[^`~]+~~"},
+	{"md", {7 | SYN_IT}, "__[^`_]+__"},
+	{"md", {7 | SYN_IT}, "_[^`_]+_"},
+	{"md", {0, 7, 5}, "\\[([^]]+)]\\(([^)]+)\\)"},
+	{"md", {0, 7, 5}, "\\[([^]]+)]\\[([^)]+)]"},
+
+	/* makefile */
+	{"mk", {0, 3}, "([A-Za-z_][A-Za-z0-9_]*)[ \t]*="},
+	{"mk", {3}, "\\$\\([a-zA-Z0-9_]+\\)"},
+	{"mk", {2 | SYN_IT}, "#.*$"},
+	{"mk", {0, SYN_BD}, "([A-Za-z_%.]+):"},
+
+	/* shell script */
+	{"sh", {2}, "#!.*$"},
+	{"sh", {2 | SYN_IT}, "#.*$"},
+	{"sh", {4}, "\"([^\"]|\\\\\")*\""},
+	{"sh", {4}, "\'[^\']*\'"},
+
+	/* status bar */
+	{"---", {7 | SYN_BD, 4, 1}, "^(\".*\").*(\\[[wr]\\]).*$"},
+	{"---", {7 | SYN_BD, 4, 4}, "^(\".*\").*(L[0-9]+) +(C[0-9]+).*$"},
+	{"---", {7 | SYN_BD}, "^.*$"},
+};
+
+/* how to hightlight current line (hll option) */
+#define SYN_LINE		(SYN_BGMK(11))
+
+/* how to hightlight text in the reverse direction */
+#define SYN_REVDIR		(SYN_BGMK(7))
+
+/* right-to-left characters (used only in dircontexts[] and dirmarks[]) */
+#define CR2L		"ءآأؤإئابةتثجحخدذرزسشصضطظعغـفقكلمنهوىييپچژکگی‌‍؛،»«؟ًٌٍَُِّْ"
+/* neutral characters (used only in dircontexts[] and dirmarks[]) */
+#define CNEUT		"-!\"#$%&'()*+,./:;<=>?@^_`{|}~ "
+
+/* direction context patterns; specifies the direction of a whole line */
+static struct dircontext {
+	int dir;
+	char *pat;
+} dircontexts[] = {
+	{-1, "^[" CR2L "]"},
+	{+1, "^[a-zA-Z_0-9]"},
+};
+
+/* direction marks; the direction of a few words in a line */
+static struct dirmark {
+	int ctx;	/* the direction context for this mark; 0 means any */
+	int dir;	/* the direction of the matched text */
+	int grp;	/* the nested subgroup; 0 means no groups */
+	char *pat;
+} dirmarks[] = {
+	{+0, +1, 1, "\\\\\\*\\[([^]]+)\\]"},
+	{+1, -1, 0, "[" CR2L "][" CNEUT CR2L "]*[" CR2L "]"},
+	{-1, +1, 0, "[a-zA-Z0-9_][^" CR2L "\\\\`$']*[a-zA-Z0-9_]"},
+	{+0, +1, 0, "\\$([^$]+)\\$"},
+	{+0, +1, 1, "\\\\[a-zA-Z0-9_]+\\{([^}]+)\\}"},
+	{-1, +1, 0, "\\\\[^ \t" CR2L "]+"},
+};
+
+/* character placeholders */
+static struct placeholder {
+	char *s;	/* the source character */
+	char *d;	/* the placeholder */
+	int wid;	/* the width of the placeholder */
+} placeholders[] = {
+	{"‌", "-", 1},
+	{"‍", "-", 1},
+};