radare2/libr/cons/grep.c

429 lines
9.8 KiB
C

/* radare - LGPL - Copyright 2009-2014 - pancake, nibble */
#include <r_cons.h>
#include <r_util.h>
#define sdb_json_indent r_cons_json_indent
#define sdb_json_unindent r_cons_json_unindent
#include "../../shlr/sdb/src/json/indent.c"
R_API void r_cons_grep_help() {
eprintf (
"|Usage: [command]~[modifier][word,word][[column][:line]\n"
"| modifiers\n"
"| & all words must match to grep the line\n"
"| ^ words must be placed at the beginning of line\n"
"| ! negate grep\n"
"| ? count number of matching lines\n"
"| .. internal 'less'\n"
"| {} json indentation\n"
"| {}.. less json indentation\n"
"| examples:\n"
"| i~:0 # show fist line o 'i' output\n"
"| pd~mov # disasm and grep for mov\n"
"| pi~[0] # show only opcode\n"
);
}
#define R_CONS_GREP_BUFSIZE 4096
R_API void r_cons_grep(const char *str) {
int wlen, len;
RCons *cons;
char buf[R_CONS_GREP_BUFSIZE];
char *ptr, *optr, *ptr2, *ptr3;
if (!str || !*str)
return;
cons = r_cons_singleton ();
cons->grep.str = NULL;
cons->grep.neg = 0;
cons->grep.amp = 0;
cons->grep.end = 0;
cons->grep.less = 0;
cons->grep.json = 0;
cons->grep.line = -1;
cons->grep.begin = 0;
cons->grep.counter = 0;
cons->grep.nstrings = 0;
cons->grep.tokenfrom = 0;
cons->grep.tokento = ST32_MAX;
while (*str) {
switch (*str) {
case '.':
if (str[1]=='.') {
cons->grep.less = 1;
return;
}
str++;
break;
case '{':
if (str[1]=='}') {
cons->grep.json = 1;
if (!strncmp (str, "{}..", 4))
cons->grep.less = 1;
str++;
return;
}
str++;
break;
case '&': str++; cons->grep.amp = 1; break;
case '^': str++; cons->grep.begin = 1; break;
case '!': str++; cons->grep.neg = 1; break;
case '?': str++; cons->grep.counter = 1;
if (*str=='?') {
r_cons_grep_help ();
return;
}
break;
default: goto while_end;
}
} while_end:
len = strlen (str)-1;
if (len > R_CONS_GREP_BUFSIZE - 1) {
eprintf("r_cons_grep: too long!\n");
return;
}
if (len>0 && str[len] == '?') {
cons->grep.counter = 1;
strncpy (buf, str, R_MIN (len, sizeof (buf)-1));
buf[len]=0;
len--;
} else strncpy (buf, str, sizeof (buf)-1);
if (len>1 && buf[len]=='$' && buf[len-1]!='\\') {
cons->grep.end = 1;
buf[len] = 0;
}
ptr = buf;
ptr3 = strchr (ptr, '['); // column number
if (ptr3) {
ptr3[0] = '\0';
cons->grep.tokenfrom = r_num_get (cons->num, ptr3+1);
ptr3 = strchr (ptr3+1, '-');
if (ptr3) {
cons->grep.tokento = r_num_get (cons->num, ptr3+1);
if (cons->grep.tokento == 0)
cons->grep.tokento = ST32_MAX;
} else cons->grep.tokento = cons->grep.tokenfrom;
if (cons->grep.tokenfrom<0)
cons->grep.tokenfrom = 0;
if (cons->grep.tokento<0)
cons->grep.tokento = ST32_MAX;
}
ptr2 = strchr (ptr, ':'); // line number
if (ptr2) {
*ptr2 = '\0';
cons->grep.line = r_num_get (cons->num, ptr2+1);
if (cons->grep.line<0)
cons->grep.line = -1;
}
free (cons->grep.str);
if (*ptr) {
cons->grep.str = (char *)strdup (ptr);
do {
optr = ptr;
ptr = strchr (ptr, ','); // grep keywords
if (ptr) *ptr++ = '\0';
wlen = strlen (optr);
if (wlen==0) continue;
if (wlen>=R_CONS_GREP_WORD_SIZE-1) {
eprintf ("grep string too long\n");
continue;
}
strncpy (cons->grep.strings[cons->grep.nstrings],
optr, R_CONS_GREP_WORD_SIZE-1);
cons->grep.nstrings++;
if (cons->grep.nstrings>R_CONS_GREP_WORDS-1) {
eprintf ("too many grep strings\n");
break;
}
} while (ptr);
} else {
cons->grep.str = strdup (ptr);
cons->grep.nstrings++;
cons->grep.strings[0][0] = 0;
}
}
R_API int r_cons_grepbuf(char *buf, int len) {
RCons *cons = r_cons_singleton ();
char *tline, *tbuf, *p, *out, *in = buf;
int ret, buffer_len = 0, l = 0, tl = 0;
if (cons->grep.json) {
char *out = sdb_json_indent (buf);
free (cons->buffer);
cons->buffer = out;
cons->buffer_len = strlen (out);
cons->buffer_sz = cons->buffer_len +1;
cons->grep.json = 0;
if (cons->grep.less) {
cons->grep.less = 0;
r_cons_less_str (cons->buffer);
}
return 3;
}
if (cons->grep.less) {
cons->grep.less = 0;
r_cons_less_str (buf);
buf[0] = 0;
cons->buffer_len = 0;
if (cons->buffer)
cons->buffer[0] = 0;
free (cons->buffer);
cons->buffer = NULL;
return 0;
}
if (!cons->buffer) {
cons->buffer_len = len+20;
cons->buffer = malloc (cons->buffer_len);
cons->buffer[0] = 0;
}
out = tbuf = calloc (1, len);
tline = malloc (len);
cons->lines = 0;
while ((int)(size_t)(in-buf)<len) {
p = strchr (in, '\n');
if (!p) {
free (tbuf);
free (tline);
return 0;
}
l = p-in;
if (l > 0) {
memcpy (tline, in, l);
tl = r_str_ansi_filter (tline, l);
if (tl < 0)
ret = -1;
else ret = r_cons_grep_line (tline, tl);
if (ret > 0) {
if (cons->grep.line == -1 ||
(cons->grep.line != -1 && cons->grep.line == cons->lines)) {
memcpy (out, tline, ret);
memcpy (out+ret, "\n", 1);
out += ret+1;
buffer_len += ret+1;
}
cons->lines++;
} else if (ret < 0) {
free (tbuf);
free (tline);
return 0;
}
in += l+1;
} else in++;
}
memcpy (buf, tbuf, len);
cons->buffer_len = buffer_len;
free (tbuf);
free (tline);
if (cons->grep.counter) {
if (cons->buffer_len<10) cons->buffer_len = 10; // HACK
snprintf (cons->buffer, cons->buffer_len, "%d\n", cons->lines);
cons->buffer_len = strlen (cons->buffer);
}
return cons->lines;
}
R_API int r_cons_grep_line(char *buf, int len) {
RCons *cons = r_cons_singleton ();
const char delims[4][2] = { "|", ",", ";", "\t" };
char *in, *out, *tok = NULL;
int hit = cons->grep.neg;
int i, j, outlen = 0;
in = calloc (1, len+1);
out = calloc (1, len+2);
memcpy (in, buf, len);
if (cons->grep.nstrings>0) {
int ampfail = cons->grep.amp;
for (i=0; i<cons->grep.nstrings; i++) {
char *p = strstr (in, cons->grep.strings[i]);
if (!p) {
ampfail = 0;
continue;
}
if (cons->grep.begin)
hit = (p == in)? 1: 0;
else hit = !cons->grep.neg;
// TODO: optimize without strlen without breaking t/feat_grep (grep end)
if (cons->grep.end && (strlen (cons->grep.strings[i]) != strlen (p)))
hit = 0 ;
if (!cons->grep.amp)
break;
}
if (cons->grep.amp)
hit = ampfail;
} else hit = 1;
if (hit) {
if ((cons->grep.tokenfrom != 0 || cons->grep.tokento != ST32_MAX) &&
(cons->grep.line == -1 || cons->grep.line == cons->lines)) {
const int delims_count = sizeof (delims) / 2;
for (i=0; i<len; i++) for (j=0; j<delims_count; j++)
if (in[i] == delims[j][0])
in[i] = ' ';
for (i=0; i <= cons->grep.tokento; i++) {
tok = (char *) strtok (i?NULL:in, " ");
if (tok) {
if (i >= cons->grep.tokenfrom) {
int toklen = strlen (tok);
memcpy (out+outlen, tok, toklen);
memcpy (out+outlen+toklen, " ", 2);
outlen += toklen+1;
}
} else {
if (!(*out)) {
free (in);
free (out);
return -1;
} else break;
}
}
outlen = outlen>0? outlen - 1: 0;
if (outlen>len) { // should never happen
eprintf ("r_cons_grep_line: wtf, how you reach this?\n");
free (in);
free (out);
return -1;
}
memcpy (buf, out, len);
len = outlen;
}
} else len = 0;
free (in);
free (out);
return len;
}
static const char *gethtmlrgb(const char *str) {
static char buf[32];
ut8 r, g, b;
r = g = b = 0;
r_cons_rgb_parse (str, &r, &g, &b, 0);
sprintf (buf, "#%02x%02x%02x", r, g, b);
return buf;
}
static const char *gethtmlcolor(const char ptrch, const char *def) {
switch (ptrch) {
case '0': return "#000"; // BLACK
case '1': return "#f00"; // RED
case '2': return "#0f0"; // GREEN
case '3': return "#ff0"; // YELLOW
case '4': return "#00f"; // BLUE
case '5': return "#f0f"; // MAGENTA
case '6': return "#aaf"; // TURQOISE
case '7': return "#fff"; // WHITE
case '8': return "#777"; // GREY
case '9': break; // ???
}
return def;
}
// XXX: rename char *r_cons_filter_html(const char *ptr)
R_API int r_cons_html_print(const char *ptr) {
const char *str = ptr;
int esc = 0;
int len = 0;
int inv = 0;
int tmp;
int tag_font = 0;
if (!ptr)
return 0;
for (;ptr[0]; ptr = ptr + 1) {
if (0 && ptr[0] == '\n') {
printf ("<br />");
fflush (stdout);
}
if (ptr[0] == 0x1b) {
esc = 1;
tmp = (int) (size_t) (ptr-str);
if (write (1, str, tmp) != tmp)
eprintf ("r_cons_html_print: write: error\n");
if (tag_font) {
printf ("</font>");
fflush(stdout);
tag_font = 0;
}
str = ptr + 1;
continue;
}
if (esc == 1) {
// \x1b[2J
if (ptr[0] != '[') {
eprintf ("Oops invalid escape char\n");
esc = 0;
str = ptr + 1;
continue;
}
esc = 2;
continue;
} else
if (esc == 2) {
// TODO: use dword comparison here
if (ptr[0]=='2' && ptr[1]=='J') {
printf ("<hr />\n");
fflush(stdout);
ptr++;
esc = 0;
str = ptr;
continue;
} else
if (!strncmp (ptr, "38;5;", 5)) {
char *end = strchr (ptr, 'm');
printf ("<font color='%s'>", gethtmlrgb (ptr));
fflush (stdout);
tag_font = 1;
ptr = end;
str = ptr + 1;
esc = 0;
} else
if (ptr[0]=='0' && ptr[1]==';' && ptr[2]=='0') {
r_cons_gotoxy (0, 0);
ptr += 4;
esc = 0;
str = ptr;
continue;
} else
if (ptr[0]=='0' && ptr[1]=='m') {
str = (++ptr) + 1;
esc = inv = 0;
continue;
// reset color
} else
if (ptr[0]=='7' && ptr[1]=='m') {
str = (++ptr) +1;
inv = 128;
esc = 0;
continue;
// reset color
} else
if (ptr[0]=='3' && ptr[2]=='m') {
printf ("<font color='%s'>", gethtmlcolor (ptr[1], inv?"#fff":"#000"));
fflush(stdout);
tag_font = 1;
ptr = ptr + 1;
str = ptr + 2;
esc = 0;
continue;
} else
if (ptr[0]=='4' && ptr[2]=='m') {
printf ("<font style='background-color:%s'>",
gethtmlcolor (ptr[1], inv?"#000":"#fff"));
fflush(stdout);
}
}
len++;
}
write (1, str, ptr-str);
return len;
}