start using static linkage like the rest of Lua

1 files changed, 42 insertions, 46 deletions

diff --git a/src/kilo.c b/src/kilo.c
index 365b8d7..58f2214 100644
--- a/src/kilo.c
+++ b/src/kilo.c
@@ -142,7 +142,7 @@ enum KEY_ACTION{
         PAGE_DOWN
 };
 
-void editorSetStatusMessage(const char *fmt, ...);
+static void editorSetStatusMessage(const char *fmt, ...);
 
 /* =========================== Syntax highlights DB =========================
  *
@@ -195,7 +195,7 @@ struct editorSyntax HLDB[] = {
 
 static struct termios orig_termios; /* In order to restore at exit.*/
 
-void disableRawMode(int fd) {
+static void disableRawMode(int fd) {
     /* Don't even check the return value as it's too late. */
     if (E.rawmode) {
         tcsetattr(fd,TCSAFLUSH,&orig_termios);
@@ -204,12 +204,12 @@ void disableRawMode(int fd) {
 }
 
 /* Called at exit to avoid remaining in raw mode. */
-void editorAtExit(void) {
+static void editorAtExit(void) {
     disableRawMode(STDIN_FILENO);
 }
 
 /* Raw mode: 1960 magic shit. */
-int enableRawMode(int fd) {
+static int enableRawMode(int fd) {
     struct termios raw;
 
     if (E.rawmode) return 0; /* Already enabled. */
@@ -244,7 +244,7 @@ fatal:
 
 /* Read a key from the terminal put in raw mode, trying to handle
  * escape sequences. */
-int editorReadKey(int fd) {
+static int editorReadKey(int fd) {
     int nread;
     char c, seq[3];
     while ((nread = read(fd,&c,1)) == 0);
@@ -298,7 +298,7 @@ int editorReadKey(int fd) {
 /* Use the ESC [6n escape sequence to query the horizontal cursor position
  * and return it. On error -1 is returned, on success the position of the
  * cursor is stored at *rows and *cols and 0 is returned. */
-int getCursorPosition(int ifd, int ofd, int *rows, int *cols) {
+static int getCursorPosition(int ifd, int ofd, int *rows, int *cols) {
     char buf[32];
     unsigned int i = 0;
 
@@ -322,7 +322,7 @@ int getCursorPosition(int ifd, int ofd, int *rows, int *cols) {
 /* Try to get the number of columns in the current terminal. If the ioctl()
  * call fails the function will try to query the terminal itself.
  * Returns 0 on success, -1 on error. */
-int getWindowSize(int ifd, int ofd, int *rows, int *cols) {
+static int getWindowSize(int ifd, int ofd, int *rows, int *cols) {
     struct winsize ws;
 
     if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
@@ -357,14 +357,14 @@ failed:
 
 /* ====================== Syntax highlight color scheme  ==================== */
 
-int is_separator(int c) {
+static int is_separator(int c) {
     return c == '\0' || isspace(c) || strchr(",.()+-/*=~%[];",c) != NULL;
 }
 
 /* Return true if the specified row last char is part of a multi line comment
  * that starts at this row or at one before, and does not end at the end
  * of the row but spawns to the next row. */
-int editorRowHasOpenComment(erow *row) {
+static int editorRowHasOpenComment(erow *row) {
     if (row->hl && row->rsize && row->hl[row->rsize-1] == HL_MLCOMMENT &&
         (row->rsize < 2 || (row->render[row->rsize-2] != '*' ||
                             row->render[row->rsize-1] != '/'))) return 1;
@@ -373,7 +373,7 @@ int editorRowHasOpenComment(erow *row) {
 
 /* Set every byte of row->hl (that corresponds to every character in the line)
  * to the right syntax highlight type (HL_* defines). */
-void editorUpdateSyntax(erow *row) {
+static void editorUpdateSyntax(erow *row) {
     row->hl = realloc(row->hl,row->rsize);
     memset(row->hl,HL_NORMAL,row->rsize);
 
@@ -511,7 +511,7 @@ void editorUpdateSyntax(erow *row) {
 }
 
 /* Maps syntax highlight token types to terminal colors. */
-int editorSyntaxToColor(int hl) {
+static int editorSyntaxToColor(int hl) {
     switch(hl) {
     case HL_COMMENT:
     case HL_MLCOMMENT: return 36;     /* cyan */
@@ -527,7 +527,7 @@ int editorSyntaxToColor(int hl) {
 /* ======================= Editor rows implementation ======================= */
 
 /* Update the rendered version and the syntax highlight of a row. */
-void editorUpdateRow(erow *row) {
+static void editorUpdateRow(erow *row) {
     unsigned int tabs = 0, nonprint = 0;
     int j, idx;
 
@@ -563,7 +563,7 @@ void editorUpdateRow(erow *row) {
 
 /* Insert a row at the specified position, shifting the other rows on the bottom
  * if required. */
-void editorInsertRow(int at, char *s, size_t len) {
+static void editorInsertRow(int at, char *s, size_t len) {
     if (at > E.numrows) return;
     E.row = realloc(E.row,sizeof(erow)*(E.numrows+1));
     if (at != E.numrows) {
@@ -584,7 +584,7 @@ void editorInsertRow(int at, char *s, size_t len) {
 }
 
 /* Free row's heap allocated stuff. */
-void editorFreeRow(erow *row) {
+static void editorFreeRow(erow *row) {
     free(row->render);
     free(row->chars);
     free(row->hl);
@@ -592,7 +592,7 @@ void editorFreeRow(erow *row) {
 
 /* Remove the row at the specified position, shifting the remainign on the
  * top. */
-void editorDelRow(int at) {
+static void editorDelRow(int at) {
     erow *row;
 
     if (at >= E.numrows) return;
@@ -604,7 +604,7 @@ void editorDelRow(int at) {
     E.dirty++;
 }
 
-void editorClear(void) {
+static void editorClear(void) {
     for (int j = E.numrows-1; j >= 0; j--)
       editorDelRow(j);
 }
@@ -613,7 +613,7 @@ void editorClear(void) {
  * Returns the pointer to the heap-allocated string and populate the
  * integer pointed by 'buflen' with the size of the string, escluding
  * the final nulterm. */
-char *editorRowsToString(int *buflen) {
+static char *editorRowsToString(int *buflen) {
     char *buf = NULL, *p;
     int totlen = 0;
     int j;
@@ -637,7 +637,7 @@ char *editorRowsToString(int *buflen) {
 
 /* Insert a character at the specified position in a row, moving the remaining
  * chars on the right if needed. */
-void editorRowInsertChar(erow *row, int at, int c) {
+static void editorRowInsertChar(erow *row, int at, int c) {
     if (at > row->size) {
         /* Pad the string with spaces if the insert location is outside the
          * current length by more than a single character. */
@@ -660,7 +660,7 @@ void editorRowInsertChar(erow *row, int at, int c) {
 }
 
 /* Append the string 's' at the end of a row */
-void editorRowAppendString(erow *row, char *s, size_t len) {
+static void editorRowAppendString(erow *row, char *s, size_t len) {
     row->chars = realloc(row->chars,row->size+len+1);
     memcpy(row->chars+row->size,s,len);
     row->size += len;
@@ -670,7 +670,7 @@ void editorRowAppendString(erow *row, char *s, size_t len) {
 }
 
 /* Delete the character at offset 'at' from the specified row. */
-void editorRowDelChar(erow *row, int at) {
+static void editorRowDelChar(erow *row, int at) {
     if (row->size <= at) return;
     memmove(row->chars+at,row->chars+at+1,row->size-at);
     editorUpdateRow(row);
@@ -679,7 +679,7 @@ void editorRowDelChar(erow *row, int at) {
 }
 
 /* Insert the specified char at the current prompt position. */
-void editorInsertChar(int c) {
+static void editorInsertChar(int c) {
     int filerow = E.rowoff+E.cy;
     int filecol = E.coloff+E.cx;
     erow *row = (filerow >= E.numrows) ? NULL : &E.row[filerow];
@@ -701,7 +701,7 @@ void editorInsertChar(int c) {
 
 /* Inserting a newline is slightly complex as we have to handle inserting a
  * newline in the middle of a line, splitting the line as needed. */
-void editorInsertNewline(void) {
+static void editorInsertNewline(void) {
     int filerow = E.rowoff+E.cy;
     int filecol = E.coloff+E.cx;
     erow *row = (filerow >= E.numrows) ? NULL : &E.row[filerow];
@@ -737,7 +737,7 @@ fixcursor:
 }
 
 /* Delete the char at the current prompt position. */
-void editorDelChar() {
+static void editorDelChar() {
     int filerow = E.rowoff+E.cy;
     int filecol = E.coloff+E.cx;
     erow *row = (filerow >= E.numrows) ? NULL : &E.row[filerow];
@@ -773,7 +773,7 @@ void editorDelChar() {
 
 /* Load the specified program in the editor memory and returns 0 on success
  * or 1 on error. */
-int editorOpen(char *filename) {
+static int editorOpen(char *filename) {
     FILE *fp;
 
     E.dirty = 0;
@@ -806,7 +806,7 @@ int editorOpen(char *filename) {
 }
 
 /* Save the current file on disk. Return 0 on success, 1 on error. */
-int editorSave(void) {
+static int editorSave(void) {
     int len;
     char *buf = editorRowsToString(&len);
     int fd = open(E.filename,O_RDWR|O_CREAT,0644);
@@ -843,7 +843,7 @@ struct abuf {
 
 #define ABUF_INIT {NULL,0}
 
-void abAppend(struct abuf *ab, const char *s, int len) {
+static void abAppend(struct abuf *ab, const char *s, int len) {
     char *new = realloc(ab->b,ab->len+len);
 
     if (new == NULL) return;
@@ -852,7 +852,7 @@ void abAppend(struct abuf *ab, const char *s, int len) {
     ab->len += len;
 }
 
-void abFree(struct abuf *ab) {
+static void abFree(struct abuf *ab) {
     free(ab->b);
 }
 
@@ -860,7 +860,7 @@ extern char *Previous_error;
 
 /* This function writes the whole screen using VT100 escape characters
  * starting from the logical state of the editor in the global state 'E'. */
-void editorRefreshScreen(void) {
+static void editorRefreshScreen(void) {
     int y;
     erow *r;
     char buf[32];
@@ -986,7 +986,7 @@ void editorRefreshScreen(void) {
 
 /* Set an editor status message for the second line of the status, at the
  * end of the screen. */
-void editorSetStatusMessage(const char *fmt, ...) {
+static void editorSetStatusMessage(const char *fmt, ...) {
     va_list ap;
     va_start(ap,fmt);
     vsnprintf(E.statusmsg,sizeof(E.statusmsg),fmt,ap);
@@ -998,7 +998,7 @@ void editorSetStatusMessage(const char *fmt, ...) {
 
 #define KILO_QUERY_LEN 256
 
-void editorFind(int fd) {
+static void editorFind(int fd) {
     char query[KILO_QUERY_LEN+1] = {0};
     int qlen = 0;
     int last_match = -1; /* Last line where a match was found. -1 for none. */
@@ -1096,7 +1096,7 @@ void editorFind(int fd) {
 /* ========================= Editor events handling  ======================== */
 
 /* Handle cursor position change because arrow keys were pressed. */
-void editorMoveCursor(int key) {
+static void editorMoveCursor(int key) {
     int filerow = E.rowoff+E.cy;
     int filecol = E.coloff+E.cx;
     int rowlen;
@@ -1170,13 +1170,13 @@ void editorMoveCursor(int key) {
 }
 
 extern char* Current_definition;
-int definition_exists(lua_State *L, char *name);
-void write_definition_to_file(lua_State *L, char *name, char *outfilename);
-void read_contents(lua_State *L, char *filename, char *out);
-void update_definition(lua_State *L, char *name, char *out);
-void save_image(lua_State *L);
-int dostring(lua_State *L, const char *s, const char *name);
-void editorGo(lua_State* L, int fd) {
+extern int definition_exists(lua_State *L, char *name);
+extern void write_definition_to_file(lua_State *L, char *name, char *outfilename);
+extern void read_contents(lua_State *L, char *filename, char *out);
+extern void update_definition(lua_State *L, char *name, char *out);
+extern void save_image(lua_State *L);
+extern int dostring(lua_State *L, const char *s, const char *name);
+static void editorGo(lua_State* L, int fd) {
     char query[KILO_QUERY_LEN+1] = {0};
     int qlen = 0;
 
@@ -1217,7 +1217,7 @@ void editorGo(lua_State* L, int fd) {
  * is typing stuff on the terminal. */
 #define KILO_QUIT_TIMES 3
 int Quit = 0;
-void editorProcessKeypress(lua_State* L, int fd) {
+static void editorProcessKeypress(lua_State* L, int fd) {
     int c = editorReadKey(fd);
     switch(c) {
     case ENTER:
@@ -1278,11 +1278,7 @@ void editorProcessKeypress(lua_State* L, int fd) {
     }
 }
 
-int editorFileWasModified(void) {
-    return E.dirty;
-}
-
-void updateWindowSize(void) {
+static void updateWindowSize(void) {
     if (getWindowSize(STDIN_FILENO,STDOUT_FILENO,
                       &E.screenrows,&E.screencols) == -1) {
         perror("Unable to query the screen for size (columns / rows)");
@@ -1291,14 +1287,14 @@ void updateWindowSize(void) {
     E.screenrows -= 2; /* Get room for status bar. */
 }
 
-void handleSigWinCh(int unused __attribute__((unused))) {
+static void handleSigWinCh(int unused __attribute__((unused))) {
     updateWindowSize();
     if (E.cy > E.screenrows) E.cy = E.screenrows - 1;
     if (E.cx > E.screencols) E.cx = E.screencols - 1;
     editorRefreshScreen();
 }
 
-void initEditor(void) {
+static void initEditor(void) {
     E.cx = 0;
     E.cy = 0;
     E.rowoff = 0;