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done syntax highlighting

This commit is contained in:
Tyrel Souza 2021-10-24 10:55:56 -04:00
parent ef959b69be
commit 682d102c88
1 changed files with 49 additions and 4 deletions
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53
tted.c
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@ -38,6 +38,7 @@ enum editorKey {
enum editorHighlight {
HL_NORMAL = 0,
HL_COMMENT,
HL_MLCOMMENT,
HL_KEYWORD1,
HL_KEYWORD2,
HL_STRING,
@ -54,15 +55,19 @@ struct editorSyntax {
char **filematch;
char **keywords;
char *singleline_comment_start;
char *multiline_comment_start;
char *multiline_comment_end;
int flags;
};
typedef struct erow {
int idx;
int size;
int rsize;
char *chars;
char *render;
unsigned char *hl;
int hl_open_comment;
} erow;
struct editorConfig {
@ -97,7 +102,7 @@ struct editorSyntax HLDB[] = {
"c",
C_HL_extensions,
C_HL_keywords,
"//",
"//", "/*", "*/",
HL_HIGHLIGHT_NUMBERS | HL_HIGHLIGHT_STRINGS
},
};
@ -234,9 +239,12 @@ int getWindowSize(int *rows, int *cols) {
int is_separator(int c){
return isspace(c) || c == '\0' || strchr(",.()+-/*=~%<>[];\"", c) != NULL;
}
/*
hello
*/
void editorUpdateSyntax(erow *row){
row->hl = realloc(row->hl, row->rsize);
memset(row->hl, HL_NORMAL, row->rsize);
@ -246,23 +254,48 @@ void editorUpdateSyntax(erow *row){
char **keywords = E.syntax->keywords;
char *scs = E.syntax->singleline_comment_start;
char *mcs = E.syntax->multiline_comment_start;
char *mce = E.syntax->multiline_comment_end;
int scs_len = scs ? strlen(scs) : 0;
int mcs_len = mcs ? strlen(mcs) : 0;
int mce_len = mce ? strlen(mce) : 0;
int prev_sep = 1;
int in_string = 0;
int in_comment = (row->idx > 0 && E.row[row->idx - 1].hl_open_comment);
int i = 0;
while(i < row->rsize){
char c = row->render[i];
unsigned char prev_hl = (i>0) ? row->hl[i-1] : HL_NORMAL;
if (scs_len && !in_string){
if (scs_len && !in_string && !in_comment){
if (!strncmp(&row->render[i], scs, scs_len)) {
memset(&row->hl[i], HL_COMMENT, row->rsize - i);
break;
}
}
if (mcs_len && mce_len && !in_string) {
if (in_comment) {
row->hl[i] = HL_MLCOMMENT;
if (!strncmp(&row->render[i], mce, mce_len)) {
memset(&row->hl[i], HL_MLCOMMENT, mce_len);
i += mce_len;
in_comment = 0;
prev_sep = 1;
continue;
} else {
i++;
continue;
}
} else if (!strncmp(&row->render[i], mcs, mcs_len)) {
memset(&row->hl[i], HL_MLCOMMENT, mcs_len);
i += mcs_len;
in_comment = 1;
continue;
}
}
if (E.syntax->flags & HL_HIGHLIGHT_STRINGS) {
if (in_string) {
row->hl[i] = HL_STRING;
@ -320,10 +353,17 @@ void editorUpdateSyntax(erow *row){
prev_sep = is_separator(c);
i++;
}
int changed = (row->hl_open_comment != in_comment);
row->hl_open_comment = in_comment;
if (changed && row->idx + 1< E.numrows){
editorUpdateSyntax(&E.row[row->idx+1]);
}
}
int editorSyntaxToColor(int hl){
switch(hl){
case HL_MLCOMMENT:
case HL_COMMENT: return 36;
case HL_KEYWORD1: return 33;
case HL_KEYWORD2: return 32;
@ -418,6 +458,9 @@ void editorInsertRow(int at, char *s, size_t len) {
if (at < 0 || at > E.numrows) return;
E.row = realloc(E.row, sizeof(erow) * (E.numrows + 1));
memmove(&E.row[at +1], &E.row[at], sizeof(erow) * (E.numrows-at));
for (int j = at + 1; j <= E.numrows; j++) E.row[j].idx++;
E.row[at].idx = at;
E.row[at].size = len;
E.row[at].chars = malloc(len + 1);
@ -426,6 +469,7 @@ void editorInsertRow(int at, char *s, size_t len) {
E.row[at].rsize = 0;
E.row[at].render = NULL;
E.row[at].hl = NULL;
E.row[at].hl_open_comment = 0;
editorUpdateRow(&E.row[at]);
E.numrows++;
E.dirty++;
@ -442,6 +486,7 @@ void editorDelRow(int at) {
editorFreeRow(&E.row[at]);
memmove(&E.row[at], &E.row[at + 1], sizeof(erow) * (E.numrows - at - 1));
for (int j = at; j = E.numrows -1; j++) E.row[j].idx--;
E.numrows--;
E.dirty++;
}