From: Laurent Mazet <laurent.mazet@thalesgroup.com>
Date: Wed, 6 Dec 2023 09:55:11 +0000 (+0100)
Subject: first process
X-Git-Url: https://secure.softndesign.org/git/?p=indent.git;a=commitdiff_plain;h=222cc7151f4d4463a118db271469b3233079f350

first process
---

diff --git a/indent.c b/indent.c
index 2b88345..874eead 100644
--- a/indent.c
+++ b/indent.c
@@ -19,6 +19,15 @@
 
 //#define BUFFERSIZE 4096
 #define BUFFERSIZE 256
+#define TABSIZE 4
+
+/* type definition */
+
+typedef enum {
+    e_unknown = 0,
+    e_ansi,
+    e_kr
+} cmode_t;
 
 /* gobal variables */
 
@@ -41,46 +50,53 @@ void usage (int ret)
 
 /* indent function */
 
-int indent (FILE *fin, FILE *fout) {
-    char buffer[BUFFERSIZE + 1] = {0};
+int indent (FILE *fin, FILE *fout, cmode_t cmode) {
+    char bufin[BUFFERSIZE + 1] = {0};
+    char bufout[BUFFERSIZE * TABSIZE + 1] = {0};
+    size_t i, nb;
 
-    char *pt = buffer;
     while (!feof (fin)) {
-        int nb = fread (pt, 1, BUFFERSIZE - (pt - buffer), fin);
+
+        /* read file */
+        nb = fread (bufin, 1, BUFFERSIZE, fin);
         VERBOSE (DEBUG, fprintf (stdout, "buffer: %d\n", nb));
-        pt = buffer;
-        int i = 0;
-        while (pt[i] != '\0') {
-            if (pt[i++] == '\n') {
-                pt[i - 1] = 0;
-
-                /* process line */
-                char *line = pt;
-                VERBOSE (DEBUG, fprintf (stdout, "line: %d\n", strlen (line)));
-                VERBOSE (DEBUG, fprintf (stdout, "out: %s\n", line));
-                int k = 0;
-                int begin = 0;
-                while (line[k] != '\0') {
-                    switch (line[k]) {
-                    case ' ':
-                    case '\t':
-                        if (begin) trailing++;
-                        break;
-                    default:
-                        begin = 0;
-
-                pt += i;
-                i = 0;
+        if (errno != 0) {
+            VERBOSE (ERROR, fprintf (stderr, "can't read file\n"));
+            exit (1);
+        }
+
+        /* process line */
+        char *ptin = bufin;
+        char *ptout = bufout;
+        while (*ptin != '\0') {
+            switch (*ptin) {
+                case '\t':
+                    for (i = 0; i < TABSIZE; i++) {
+                        *ptout++ = ' ';
+                    }
+                    break;
+                case '{':
+                case '}':
+                case ';':
+                    *ptout++ = *ptin;
+                    *ptout++ = '\n';
+                    break;
+                default:
+                    *ptout++ = *ptin;
             }
+            ptin++;
         }
-        /* copy end buffer */
-        int j = 0;
-        if (pt - buffer < BUFFERSIZE) {
-            for (i = pt - buffer; i < BUFFERSIZE; i++) {
-                buffer[j++] = *pt++;
+        ptout = '\0';
+
+        /* write file */
+        ptout = bufout;
+        while ((nb = fread (ptout, 1, strlen (ptout), fout)) != strlen (ptout)) {
+            if (errno != 0) {
+                VERBOSE (ERROR, fprintf (stderr, "can't write file\n"));
+                exit (1);
             }
-        } 
-        pt = buffer + j;
+            ptout += nb;
+        }
     }
 
     /* close all */
@@ -94,6 +110,7 @@ int indent (FILE *fin, FILE *fout) {
 
 int main (int argc, char *argv[]) 
 {
+    cmode_t cmode = e_unknown;
     char *input = NULL;
     char *mode = "ansi";
     char *output = NULL;
@@ -155,7 +172,16 @@ int main (int argc, char *argv[])
         fout = stdout;
     }
 
-    return indent (fin, fout);
+    /* check mode */
+    if (strcmp (mode, "ansi") == 0) {
+        cmode = e_ansi;
+    } else if (strcmp (mode, "k&r") == 0) {
+        cmode = e_kr;
+    } else {
+        VERBOSE (ERROR, fprintf (stderr, "error: mode '%s' unknown\n", mode));
+    }
+
+    return indent (fin, fout, cmode);
 }
 
 // test: indent.exe -h