diff options
Diffstat (limited to 'developer_cmds/indent/indent.c')
| -rw-r--r-- | developer_cmds/indent/indent.c | 1234 |
1 files changed, 1234 insertions, 0 deletions
diff --git a/developer_cmds/indent/indent.c b/developer_cmds/indent/indent.c new file mode 100644 index 0000000..b88118e --- /dev/null +++ b/developer_cmds/indent/indent.c @@ -0,0 +1,1234 @@ +/* + * Copyright (c) 1985 Sun Microsystems, Inc. + * Copyright (c) 1976 Board of Trustees of the University of Illinois. + * Copyright (c) 1980, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char copyright[] = +"@(#) Copyright (c) 1985 Sun Microsystems, Inc.\n\ +@(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.\n\ +@(#) Copyright (c) 1980, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)indent.c 5.17 (Berkeley) 6/7/93"; +#endif /* not lint */ +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/usr.bin/indent/indent.c,v 1.28 2011/12/30 11:02:40 uqs Exp $"); + +#include <sys/param.h> +#include <err.h> +#include <fcntl.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include "indent_globs.h" +#include "indent_codes.h" +#include "indent.h" + +static void bakcopy(void); + +const char *in_name = "Standard Input"; /* will always point to name of input + * file */ +const char *out_name = "Standard Output"; /* will always point to name + * of output file */ +char bakfile[MAXPATHLEN] = ""; + +int +main(int argc, char **argv) +{ + + int dec_ind; /* current indentation for declarations */ + int di_stack[20]; /* a stack of structure indentation levels */ + int flushed_nl; /* used when buffering up comments to remember + * that a newline was passed over */ + int force_nl; /* when true, code must be broken */ + int hd_type = 0; /* used to store type of stmt for if (...), + * for (...), etc */ + int i; /* local loop counter */ + int scase; /* set to true when we see a case, so we will + * know what to do with the following colon */ + int sp_sw; /* when true, we are in the expression of + * if(...), while(...), etc. */ + int squest; /* when this is positive, we have seen a ? + * without the matching : in a <c>?<s>:<s> + * construct */ + const char *t_ptr; /* used for copying tokens */ + int tabs_to_var; /* true if using tabs to indent to var name */ + int type_code; /* the type of token, returned by lexi */ + + int last_else = 0; /* true iff last keyword was an else */ + + + /*-----------------------------------------------*\ + | INITIALIZATION | + \*-----------------------------------------------*/ + + found_err = 0; + + ps.p_stack[0] = stmt; /* this is the parser's stack */ + ps.last_nl = true; /* this is true if the last thing scanned was + * a newline */ + ps.last_token = semicolon; + combuf = (char *) malloc(bufsize); + if (combuf == NULL) + err(1, NULL); + labbuf = (char *) malloc(bufsize); + if (labbuf == NULL) + err(1, NULL); + codebuf = (char *) malloc(bufsize); + if (codebuf == NULL) + err(1, NULL); + tokenbuf = (char *) malloc(bufsize); + if (tokenbuf == NULL) + err(1, NULL); + l_com = combuf + bufsize - 5; + l_lab = labbuf + bufsize - 5; + l_code = codebuf + bufsize - 5; + l_token = tokenbuf + bufsize - 5; + combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label, and + * comment buffers */ + combuf[1] = codebuf[1] = labbuf[1] = '\0'; + ps.else_if = 1; /* Default else-if special processing to on */ + s_lab = e_lab = labbuf + 1; + s_code = e_code = codebuf + 1; + s_com = e_com = combuf + 1; + s_token = e_token = tokenbuf + 1; + + in_buffer = (char *) malloc(10); + if (in_buffer == NULL) + err(1, NULL); + in_buffer_limit = in_buffer + 8; + buf_ptr = buf_end = in_buffer; + line_no = 1; + had_eof = ps.in_decl = ps.decl_on_line = break_comma = false; + sp_sw = force_nl = false; + ps.in_or_st = false; + ps.bl_line = true; + dec_ind = 0; + di_stack[ps.dec_nest = 0] = 0; + ps.want_blank = ps.in_stmt = ps.ind_stmt = false; + + scase = ps.pcase = false; + squest = 0; + sc_end = 0; + bp_save = 0; + be_save = 0; + + output = 0; + tabs_to_var = 0; + + /*--------------------------------------------------*\ + | COMMAND LINE SCAN | + \*--------------------------------------------------*/ + +#ifdef undef + max_col = 78; /* -l78 */ + lineup_to_parens = 1; /* -lp */ + ps.ljust_decl = 0; /* -ndj */ + ps.com_ind = 33; /* -c33 */ + star_comment_cont = 1; /* -sc */ + ps.ind_size = 8; /* -i8 */ + verbose = 0; + ps.decl_indent = 16; /* -di16 */ + ps.local_decl_indent = -1; /* if this is not set to some nonnegative value + * by an arg, we will set this equal to + * ps.decl_ind */ + ps.indent_parameters = 1; /* -ip */ + ps.decl_com_ind = 0; /* if this is not set to some positive value + * by an arg, we will set this equal to + * ps.com_ind */ + btype_2 = 1; /* -br */ + cuddle_else = 1; /* -ce */ + ps.unindent_displace = 0; /* -d0 */ + ps.case_indent = 0; /* -cli0 */ + format_block_comments = 1; /* -fcb */ + format_col1_comments = 1; /* -fc1 */ + procnames_start_line = 1; /* -psl */ + proc_calls_space = 0; /* -npcs */ + comment_delimiter_on_blankline = 1; /* -cdb */ + ps.leave_comma = 1; /* -nbc */ +#endif + + for (i = 1; i < argc; ++i) + if (strcmp(argv[i], "-npro") == 0) + break; + set_defaults(); + if (i >= argc) + set_profile(); + + for (i = 1; i < argc; ++i) { + + /* + * look thru args (if any) for changes to defaults + */ + if (argv[i][0] != '-') {/* no flag on parameter */ + if (input == NULL) { /* we must have the input file */ + in_name = argv[i]; /* remember name of input file */ + input = fopen(in_name, "r"); + if (input == NULL) /* check for open error */ + err(1, "%s", in_name); + continue; + } + else if (output == NULL) { /* we have the output file */ + out_name = argv[i]; /* remember name of output file */ + if (strcmp(in_name, out_name) == 0) { /* attempt to overwrite + * the file */ + errx(1, "input and output files must be different"); + } + output = fopen(out_name, "w"); + if (output == NULL) /* check for create error */ + err(1, "%s", out_name); + continue; + } + errx(1, "unknown parameter: %s", argv[i]); + } + else + set_option(argv[i]); + } /* end of for */ + if (input == NULL) + input = stdin; + if (output == NULL) { + if (troff || input == stdin) + output = stdout; + else { + out_name = in_name; + bakcopy(); + } + } + if (ps.com_ind <= 1) + ps.com_ind = 2; /* dont put normal comments before column 2 */ + if (troff) { + if (bodyf.font[0] == 0) + parsefont(&bodyf, "R"); + if (scomf.font[0] == 0) + parsefont(&scomf, "I"); + if (blkcomf.font[0] == 0) + blkcomf = scomf, blkcomf.size += 2; + if (boxcomf.font[0] == 0) + boxcomf = blkcomf; + if (stringf.font[0] == 0) + parsefont(&stringf, "L"); + if (keywordf.font[0] == 0) + parsefont(&keywordf, "B"); + writefdef(&bodyf, 'B'); + writefdef(&scomf, 'C'); + writefdef(&blkcomf, 'L'); + writefdef(&boxcomf, 'X'); + writefdef(&stringf, 'S'); + writefdef(&keywordf, 'K'); + } + if (block_comment_max_col <= 0) + block_comment_max_col = max_col; + if (ps.local_decl_indent < 0) /* if not specified by user, set this */ + ps.local_decl_indent = ps.decl_indent; + if (ps.decl_com_ind <= 0) /* if not specified by user, set this */ + ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind; + if (continuation_indent == 0) + continuation_indent = ps.ind_size; + fill_buffer(); /* get first batch of stuff into input buffer */ + + parse(semicolon); + { + char *p = buf_ptr; + int col = 1; + + while (1) { + if (*p == ' ') + col++; + else if (*p == '\t') + col = ((col - 1) & ~7) + 9; + else + break; + p++; + } + if (col > ps.ind_size) + ps.ind_level = ps.i_l_follow = col / ps.ind_size; + } + if (troff) { + const char *p = in_name, + *beg = in_name; + + while (*p) + if (*p++ == '/') + beg = p; + fprintf(output, ".Fn \"%s\"\n", beg); + } + /* + * START OF MAIN LOOP + */ + + while (1) { /* this is the main loop. it will go until we + * reach eof */ + int is_procname; + + type_code = lexi(); /* lexi reads one token. The actual + * characters read are stored in "token". lexi + * returns a code indicating the type of token */ + is_procname = ps.procname[0]; + + /* + * The following code moves everything following an if (), while (), + * else, etc. up to the start of the following stmt to a buffer. This + * allows proper handling of both kinds of brace placement. + */ + + flushed_nl = false; + while (ps.search_brace) { /* if we scanned an if(), while(), + * etc., we might need to copy stuff + * into a buffer we must loop, copying + * stuff into save_com, until we find + * the start of the stmt which follows + * the if, or whatever */ + switch (type_code) { + case newline: + ++line_no; + flushed_nl = true; + case form_feed: + break; /* form feeds and newlines found here will be + * ignored */ + + case lbrace: /* this is a brace that starts the compound + * stmt */ + if (sc_end == 0) { /* ignore buffering if a comment wasn't + * stored up */ + ps.search_brace = false; + goto check_type; + } + if (btype_2) { + save_com[0] = '{'; /* we either want to put the brace + * right after the if */ + goto sw_buffer; /* go to common code to get out of + * this loop */ + } + case comment: /* we have a comment, so we must copy it into + * the buffer */ + if (!flushed_nl || sc_end != 0) { + if (sc_end == 0) { /* if this is the first comment, we + * must set up the buffer */ + save_com[0] = save_com[1] = ' '; + sc_end = &(save_com[2]); + } + else { + *sc_end++ = '\n'; /* add newline between + * comments */ + *sc_end++ = ' '; + --line_no; + } + *sc_end++ = '/'; /* copy in start of comment */ + *sc_end++ = '*'; + + for (;;) { /* loop until we get to the end of the comment */ + *sc_end = *buf_ptr++; + if (buf_ptr >= buf_end) + fill_buffer(); + + if (*sc_end++ == '*' && *buf_ptr == '/') + break; /* we are at end of comment */ + + if (sc_end >= &(save_com[sc_size])) { /* check for temp buffer + * overflow */ + diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever"); + fflush(output); + exit(1); + } + } + *sc_end++ = '/'; /* add ending slash */ + if (++buf_ptr >= buf_end) /* get past / in buffer */ + fill_buffer(); + break; + } + default: /* it is the start of a normal statement */ + if (flushed_nl) /* if we flushed a newline, make sure it is + * put back */ + force_nl = true; + if ((type_code == sp_paren && *token == 'i' + && last_else && ps.else_if) + || (type_code == sp_nparen && *token == 'e' + && e_code != s_code && e_code[-1] == '}')) + force_nl = false; + + if (sc_end == 0) { /* ignore buffering if comment wasn't + * saved up */ + ps.search_brace = false; + goto check_type; + } + if (force_nl) { /* if we should insert a nl here, put it into + * the buffer */ + force_nl = false; + --line_no; /* this will be re-increased when the nl is + * read from the buffer */ + *sc_end++ = '\n'; + *sc_end++ = ' '; + if (verbose && !flushed_nl) /* print error msg if the line + * was not already broken */ + diag2(0, "Line broken"); + flushed_nl = false; + } + for (t_ptr = token; *t_ptr; ++t_ptr) + *sc_end++ = *t_ptr; /* copy token into temp buffer */ + ps.procname[0] = 0; + + sw_buffer: + ps.search_brace = false; /* stop looking for start of + * stmt */ + bp_save = buf_ptr; /* save current input buffer */ + be_save = buf_end; + buf_ptr = save_com; /* fix so that subsequent calls to + * lexi will take tokens out of + * save_com */ + *sc_end++ = ' ';/* add trailing blank, just in case */ + buf_end = sc_end; + sc_end = 0; + break; + } /* end of switch */ + if (type_code != 0) /* we must make this check, just in case there + * was an unexpected EOF */ + type_code = lexi(); /* read another token */ + /* if (ps.search_brace) ps.procname[0] = 0; */ + if ((is_procname = ps.procname[0]) && flushed_nl + && !procnames_start_line && ps.in_decl + && type_code == ident) + flushed_nl = 0; + } /* end of while (search_brace) */ + last_else = 0; +check_type: + if (type_code == 0) { /* we got eof */ + if (s_lab != e_lab || s_code != e_code + || s_com != e_com) /* must dump end of line */ + dump_line(); + if (ps.tos > 1) /* check for balanced braces */ + diag2(1, "Stuff missing from end of file"); + + if (verbose) { + printf("There were %d output lines and %d comments\n", + ps.out_lines, ps.out_coms); + printf("(Lines with comments)/(Lines with code): %6.3f\n", + (1.0 * ps.com_lines) / code_lines); + } + fflush(output); + exit(found_err); + } + if ( + (type_code != comment) && + (type_code != newline) && + (type_code != preesc) && + (type_code != form_feed)) { + if (force_nl && + (type_code != semicolon) && + (type_code != lbrace || !btype_2)) { + /* we should force a broken line here */ + if (verbose && !flushed_nl) + diag2(0, "Line broken"); + flushed_nl = false; + dump_line(); + ps.want_blank = false; /* dont insert blank at line start */ + force_nl = false; + } + ps.in_stmt = true; /* turn on flag which causes an extra level of + * indentation. this is turned off by a ; or + * '}' */ + if (s_com != e_com) { /* the turkey has embedded a comment + * in a line. fix it */ + *e_code++ = ' '; + for (t_ptr = s_com; *t_ptr; ++t_ptr) { + CHECK_SIZE_CODE; + *e_code++ = *t_ptr; + } + *e_code++ = ' '; + *e_code = '\0'; /* null terminate code sect */ + ps.want_blank = false; + e_com = s_com; + } + } + else if (type_code != comment) /* preserve force_nl thru a comment */ + force_nl = false; /* cancel forced newline after newline, form + * feed, etc */ + + + + /*-----------------------------------------------------*\ + | do switch on type of token scanned | + \*-----------------------------------------------------*/ + CHECK_SIZE_CODE; + switch (type_code) { /* now, decide what to do with the token */ + + case form_feed: /* found a form feed in line */ + ps.use_ff = true; /* a form feed is treated much like a newline */ + dump_line(); + ps.want_blank = false; + break; + + case newline: + if (ps.last_token != comma || ps.p_l_follow > 0 + || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) { + dump_line(); + ps.want_blank = false; + } + ++line_no; /* keep track of input line number */ + break; + + case lparen: /* got a '(' or '[' */ + ++ps.p_l_follow; /* count parens to make Healy happy */ + if (ps.want_blank && *token != '[' && + (ps.last_token != ident || proc_calls_space + || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon)))) + *e_code++ = ' '; + if (ps.in_decl && !ps.block_init) + if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) { + ps.dumped_decl_indent = 1; + sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); + e_code += strlen(e_code); + } + else { + while ((e_code - s_code) < dec_ind) { + CHECK_SIZE_CODE; + *e_code++ = ' '; + } + *e_code++ = token[0]; + } + else + *e_code++ = token[0]; + ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code; + if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent + && ps.paren_indents[0] < 2 * ps.ind_size) + ps.paren_indents[0] = 2 * ps.ind_size; + ps.want_blank = false; + if (ps.in_or_st && *token == '(' && ps.tos <= 2) { + /* + * this is a kluge to make sure that declarations will be + * aligned right if proc decl has an explicit type on it, i.e. + * "int a(x) {..." + */ + parse(semicolon); /* I said this was a kluge... */ + ps.in_or_st = false; /* turn off flag for structure decl or + * initialization */ + } + if (ps.sizeof_keyword) + ps.sizeof_mask |= 1 << ps.p_l_follow; + break; + + case rparen: /* got a ')' or ']' */ + rparen_count--; + if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) { + ps.last_u_d = true; + ps.cast_mask &= (1 << ps.p_l_follow) - 1; + ps.want_blank = false; + } else + ps.want_blank = true; + ps.sizeof_mask &= (1 << ps.p_l_follow) - 1; + if (--ps.p_l_follow < 0) { + ps.p_l_follow = 0; + diag3(0, "Extra %c", *token); + } + if (e_code == s_code) /* if the paren starts the line */ + ps.paren_level = ps.p_l_follow; /* then indent it */ + + *e_code++ = token[0]; + + if (sp_sw && (ps.p_l_follow == 0)) { /* check for end of if + * (...), or some such */ + sp_sw = false; + force_nl = true;/* must force newline after if */ + ps.last_u_d = true; /* inform lexi that a following + * operator is unary */ + ps.in_stmt = false; /* dont use stmt continuation + * indentation */ + + parse(hd_type); /* let parser worry about if, or whatever */ + } + ps.search_brace = btype_2; /* this should insure that constructs + * such as main(){...} and int[]{...} + * have their braces put in the right + * place */ + break; + + case unary_op: /* this could be any unary operation */ + if (ps.want_blank) + *e_code++ = ' '; + + if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) { + sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token); + ps.dumped_decl_indent = 1; + e_code += strlen(e_code); + } + else { + const char *res = token; + + if (ps.in_decl && !ps.block_init) { /* if this is a unary op + * in a declaration, we + * should indent this + * token */ + for (i = 0; token[i]; ++i); /* find length of token */ + while ((e_code - s_code) < (dec_ind - i)) { + CHECK_SIZE_CODE; + *e_code++ = ' '; /* pad it */ + } + } + if (troff && token[0] == '-' && token[1] == '>') + res = "\\(->"; + for (t_ptr = res; *t_ptr; ++t_ptr) { + CHECK_SIZE_CODE; + *e_code++ = *t_ptr; + } + } + ps.want_blank = false; + break; + + case binary_op: /* any binary operation */ + if (ps.want_blank) + *e_code++ = ' '; + { + const char *res = token; + + if (troff) + switch (token[0]) { + case '<': + if (token[1] == '=') + res = "\\(<="; + break; + case '>': + if (token[1] == '=') + res = "\\(>="; + break; + case '!': + if (token[1] == '=') + res = "\\(!="; + break; + case '|': + if (token[1] == '|') + res = "\\(br\\(br"; + else if (token[1] == 0) + res = "\\(br"; + break; + } + for (t_ptr = res; *t_ptr; ++t_ptr) { + CHECK_SIZE_CODE; + *e_code++ = *t_ptr; /* move the operator */ + } + } + ps.want_blank = true; + break; + + case postop: /* got a trailing ++ or -- */ + *e_code++ = token[0]; + *e_code++ = token[1]; + ps.want_blank = true; + break; + + case question: /* got a ? */ + squest++; /* this will be used when a later colon + * appears so we can distinguish the + * <c>?<n>:<n> construct */ + if (ps.want_blank) + *e_code++ = ' '; + *e_code++ = '?'; + ps.want_blank = true; + break; + + case casestmt: /* got word 'case' or 'default' */ + scase = true; /* so we can process the later colon properly */ + goto copy_id; + + case colon: /* got a ':' */ + if (squest > 0) { /* it is part of the <c>?<n>: <n> construct */ + --squest; + if (ps.want_blank) + *e_code++ = ' '; + *e_code++ = ':'; + ps.want_blank = true; + break; + } + if (ps.in_or_st) { + *e_code++ = ':'; + ps.want_blank = false; + break; + } + ps.in_stmt = false; /* seeing a label does not imply we are in a + * stmt */ + for (t_ptr = s_code; *t_ptr; ++t_ptr) + *e_lab++ = *t_ptr; /* turn everything so far into a label */ + e_code = s_code; + *e_lab++ = ':'; + *e_lab++ = ' '; + *e_lab = '\0'; + + force_nl = ps.pcase = scase; /* ps.pcase will be used by + * dump_line to decide how to + * indent the label. force_nl + * will force a case n: to be + * on a line by itself */ + scase = false; + ps.want_blank = false; + break; + + case semicolon: /* got a ';' */ + ps.in_or_st = false;/* we are not in an initialization or + * structure declaration */ + scase = false; /* these will only need resetting in an error */ + squest = 0; + if (ps.last_token == rparen && rparen_count == 0) + ps.in_parameter_declaration = 0; + ps.cast_mask = 0; + ps.sizeof_mask = 0; + ps.block_init = 0; + ps.block_init_level = 0; + ps.just_saw_decl--; + + if (ps.in_decl && s_code == e_code && !ps.block_init) + while ((e_code - s_code) < (dec_ind - 1)) { + CHECK_SIZE_CODE; + *e_code++ = ' '; + } + + ps.in_decl = (ps.dec_nest > 0); /* if we were in a first level + * structure declaration, we + * arent any more */ + + if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) { + + /* + * This should be true iff there were unbalanced parens in the + * stmt. It is a bit complicated, because the semicolon might + * be in a for stmt + */ + diag2(1, "Unbalanced parens"); + ps.p_l_follow = 0; + if (sp_sw) { /* this is a check for an if, while, etc. with + * unbalanced parens */ + sp_sw = false; + parse(hd_type); /* dont lose the if, or whatever */ + } + } + *e_code++ = ';'; + ps.want_blank = true; + ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in the + * middle of a stmt */ + + if (!sp_sw) { /* if not if for (;;) */ + parse(semicolon); /* let parser know about end of stmt */ + force_nl = true;/* force newline after an end of stmt */ + } + break; + + case lbrace: /* got a '{' */ + ps.in_stmt = false; /* dont indent the {} */ + if (!ps.block_init) + force_nl = true;/* force other stuff on same line as '{' onto + * new line */ + else if (ps.block_init_level <= 0) + ps.block_init_level = 1; + else + ps.block_init_level++; + + if (s_code != e_code && !ps.block_init) { + if (!btype_2) { + dump_line(); + ps.want_blank = false; + } + else if (ps.in_parameter_declaration && !ps.in_or_st) { + ps.i_l_follow = 0; + if (function_brace_split) { /* dump the line prior to the + * brace ... */ + dump_line(); + ps.want_blank = false; + } else /* add a space between the decl and brace */ + ps.want_blank = true; + } + } + if (ps.in_parameter_declaration) + prefix_blankline_requested = 0; + + if (ps.p_l_follow > 0) { /* check for preceding unbalanced + * parens */ + diag2(1, "Unbalanced parens"); + ps.p_l_follow = 0; + if (sp_sw) { /* check for unclosed if, for, etc. */ + sp_sw = false; + parse(hd_type); + ps.ind_level = ps.i_l_follow; + } + } + if (s_code == e_code) + ps.ind_stmt = false; /* dont put extra indentation on line + * with '{' */ + if (ps.in_decl && ps.in_or_st) { /* this is either a structure + * declaration or an init */ + di_stack[ps.dec_nest++] = dec_ind; + /* ? dec_ind = 0; */ + } + else { + ps.decl_on_line = false; /* we can't be in the middle of + * a declaration, so don't do + * special indentation of + * comments */ + if (blanklines_after_declarations_at_proctop + && ps.in_parameter_declaration) + postfix_blankline_requested = 1; + ps.in_parameter_declaration = 0; + } + dec_ind = 0; + parse(lbrace); /* let parser know about this */ + if (ps.want_blank) /* put a blank before '{' if '{' is not at + * start of line */ + *e_code++ = ' '; + ps.want_blank = false; + *e_code++ = '{'; + ps.just_saw_decl = 0; + break; + + case rbrace: /* got a '}' */ + if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be + * omitted in + * declarations */ + parse(semicolon); + if (ps.p_l_follow) {/* check for unclosed if, for, else. */ + diag2(1, "Unbalanced parens"); + ps.p_l_follow = 0; + sp_sw = false; + } + ps.just_saw_decl = 0; + ps.block_init_level--; + if (s_code != e_code && !ps.block_init) { /* '}' must be first on + * line */ + if (verbose) + diag2(0, "Line broken"); + dump_line(); + } + *e_code++ = '}'; + ps.want_blank = true; + ps.in_stmt = ps.ind_stmt = false; + if (ps.dec_nest > 0) { /* we are in multi-level structure + * declaration */ + dec_ind = di_stack[--ps.dec_nest]; + if (ps.dec_nest == 0 && !ps.in_parameter_declaration) + ps.just_saw_decl = 2; + ps.in_decl = true; + } + prefix_blankline_requested = 0; + parse(rbrace); /* let parser know about this */ + ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead + && ps.il[ps.tos] >= ps.ind_level; + if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0) + postfix_blankline_requested = 1; + break; + + case swstmt: /* got keyword "switch" */ + sp_sw = true; + hd_type = swstmt; /* keep this for when we have seen the + * expression */ + goto copy_id; /* go move the token into buffer */ + + case sp_paren: /* token is if, while, for */ + sp_sw = true; /* the interesting stuff is done after the + * expression is scanned */ + hd_type = (*token == 'i' ? ifstmt : + (*token == 'w' ? whilestmt : forstmt)); + + /* + * remember the type of header for later use by parser + */ + goto copy_id; /* copy the token into line */ + + case sp_nparen: /* got else, do */ + ps.in_stmt = false; + if (*token == 'e') { + if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) { + if (verbose) + diag2(0, "Line broken"); + dump_line();/* make sure this starts a line */ + ps.want_blank = false; + } + force_nl = true;/* also, following stuff must go onto new line */ + last_else = 1; + parse(elselit); + } + else { + if (e_code != s_code) { /* make sure this starts a line */ + if (verbose) + diag2(0, "Line broken"); + dump_line(); + ps.want_blank = false; + } + force_nl = true;/* also, following stuff must go onto new line */ + last_else = 0; + parse(dolit); + } + goto copy_id; /* move the token into line */ + + case decl: /* we have a declaration type (int, register, + * etc.) */ + parse(decl); /* let parser worry about indentation */ + if (ps.last_token == rparen && ps.tos <= 1) { + ps.in_parameter_declaration = 1; + if (s_code != e_code) { + dump_line(); + ps.want_blank = 0; + } + } + if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) { + ps.ind_level = ps.i_l_follow = 1; + ps.ind_stmt = 0; + } + ps.in_or_st = true; /* this might be a structure or initialization + * declaration */ + ps.in_decl = ps.decl_on_line = true; + if ( /* !ps.in_or_st && */ ps.dec_nest <= 0) + ps.just_saw_decl = 2; + prefix_blankline_requested = 0; + for (i = 0; token[i++];); /* get length of token */ + + if (ps.ind_level == 0 || ps.dec_nest > 0) { + /* global variable or struct member in local variable */ + dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i; + tabs_to_var = (use_tabs ? ps.decl_indent > 0 : 0); + } else { + /* local variable */ + dec_ind = ps.local_decl_indent > 0 ? ps.local_decl_indent : i; + tabs_to_var = (use_tabs ? ps.local_decl_indent > 0 : 0); + } + goto copy_id; + + case ident: /* got an identifier or constant */ + if (ps.in_decl) { /* if we are in a declaration, we must indent + * identifier */ + if (is_procname == 0 || !procnames_start_line) { + if (!ps.block_init) { + if (troff && !ps.dumped_decl_indent) { + if (ps.want_blank) + *e_code++ = ' '; + ps.want_blank = false; + sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7); + ps.dumped_decl_indent = 1; + e_code += strlen(e_code); + } else { + int cur_dec_ind; + int pos, startpos; + + /* + * in order to get the tab math right for + * indentations that are not multiples of 8 we + * need to modify both startpos and dec_ind + * (cur_dec_ind) here by eight minus the + * remainder of the current starting column + * divided by eight. This seems to be a + * properly working fix + */ + startpos = e_code - s_code; + cur_dec_ind = dec_ind; + pos = startpos; + if ((ps.ind_level * ps.ind_size) % 8 != 0) { + pos += (ps.ind_level * ps.ind_size) % 8; + cur_dec_ind += (ps.ind_level * ps.ind_size) % 8; + } + + if (tabs_to_var) { + while ((pos & ~7) + 8 <= cur_dec_ind) { + CHECK_SIZE_CODE; + *e_code++ = '\t'; + pos = (pos & ~7) + 8; + } + } + while (pos < cur_dec_ind) { + CHECK_SIZE_CODE; + *e_code++ = ' '; + pos++; + } + if (ps.want_blank && e_code - s_code == startpos) + *e_code++ = ' '; + ps.want_blank = false; + } + } + } else { + if (ps.want_blank) + *e_code++ = ' '; + ps.want_blank = false; + if (dec_ind && s_code != e_code) + dump_line(); + dec_ind = 0; + } + } + else if (sp_sw && ps.p_l_follow == 0) { + sp_sw = false; + force_nl = true; + ps.last_u_d = true; + ps.in_stmt = false; + parse(hd_type); + } + copy_id: + if (ps.want_blank) + *e_code++ = ' '; + if (troff && ps.its_a_keyword) { + e_code = chfont(&bodyf, &keywordf, e_code); + for (t_ptr = token; *t_ptr; ++t_ptr) { + CHECK_SIZE_CODE; + *e_code++ = keywordf.allcaps && islower(*t_ptr) + ? toupper(*t_ptr) : *t_ptr; + } + e_code = chfont(&keywordf, &bodyf, e_code); + } + else + for (t_ptr = token; *t_ptr; ++t_ptr) { + CHECK_SIZE_CODE; + *e_code++ = *t_ptr; + } + ps.want_blank = true; + break; + + case period: /* treat a period kind of like a binary + * operation */ + *e_code++ = '.'; /* move the period into line */ + ps.want_blank = false; /* dont put a blank after a period */ + break; + + case comma: + ps.want_blank = (s_code != e_code); /* only put blank after comma + * if comma does not start the + * line */ + if (ps.in_decl && is_procname == 0 && !ps.block_init) + while ((e_code - s_code) < (dec_ind - 1)) { + CHECK_SIZE_CODE; + *e_code++ = ' '; + } + + *e_code++ = ','; + if (ps.p_l_follow == 0) { + if (ps.block_init_level <= 0) + ps.block_init = 0; + if (break_comma && (!ps.leave_comma || compute_code_target() + (e_code - s_code) > max_col - 8)) + force_nl = true; + } + break; + + case preesc: /* got the character '#' */ + if ((s_com != e_com) || + (s_lab != e_lab) || + (s_code != e_code)) + dump_line(); + *e_lab++ = '#'; /* move whole line to 'label' buffer */ + { + int in_comment = 0; + int com_start = 0; + char quote = 0; + int com_end = 0; + + while (*buf_ptr == ' ' || *buf_ptr == '\t') { + buf_ptr++; + if (buf_ptr >= buf_end) + fill_buffer(); + } + while (*buf_ptr != '\n' || (in_comment && !had_eof)) { + CHECK_SIZE_LAB; + *e_lab = *buf_ptr++; + if (buf_ptr >= buf_end) + fill_buffer(); + switch (*e_lab++) { + case BACKSLASH: + if (troff) + *e_lab++ = BACKSLASH; + if (!in_comment) { + *e_lab++ = *buf_ptr++; + if (buf_ptr >= buf_end) + fill_buffer(); + } + break; + case '/': + if (*buf_ptr == '*' && !in_comment && !quote) { + in_comment = 1; + *e_lab++ = *buf_ptr++; + com_start = e_lab - s_lab - 2; + } + break; + case '"': + if (quote == '"') + quote = 0; + break; + case '\'': + if (quote == '\'') + quote = 0; + break; + case '*': + if (*buf_ptr == '/' && in_comment) { + in_comment = 0; + *e_lab++ = *buf_ptr++; + com_end = e_lab - s_lab; + } + break; + } + } + + while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) + e_lab--; + if (e_lab - s_lab == com_end && bp_save == 0) { /* comment on + * preprocessor line */ + if (sc_end == 0) /* if this is the first comment, we + * must set up the buffer */ + sc_end = &(save_com[0]); + else { + *sc_end++ = '\n'; /* add newline between + * comments */ + *sc_end++ = ' '; + --line_no; + } + bcopy(s_lab + com_start, sc_end, com_end - com_start); + sc_end += com_end - com_start; + if (sc_end >= &save_com[sc_size]) + abort(); + e_lab = s_lab + com_start; + while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) + e_lab--; + bp_save = buf_ptr; /* save current input buffer */ + be_save = buf_end; + buf_ptr = save_com; /* fix so that subsequent calls to + * lexi will take tokens out of + * save_com */ + *sc_end++ = ' '; /* add trailing blank, just in case */ + buf_end = sc_end; + sc_end = 0; + } + *e_lab = '\0'; /* null terminate line */ + ps.pcase = false; + } + + if (strncmp(s_lab, "#if", 3) == 0) { + if (blanklines_around_conditional_compilation) { + int c; + prefix_blankline_requested++; + while ((c = getc(input)) == '\n'); + ungetc(c, input); + } + if ((size_t)ifdef_level < sizeof(state_stack)/sizeof(state_stack[0])) { + match_state[ifdef_level].tos = -1; + state_stack[ifdef_level++] = ps; + } + else + diag2(1, "#if stack overflow"); + } + else if (strncmp(s_lab, "#else", 5) == 0) + if (ifdef_level <= 0) + diag2(1, "Unmatched #else"); + else { + match_state[ifdef_level - 1] = ps; + ps = state_stack[ifdef_level - 1]; + } + else if (strncmp(s_lab, "#endif", 6) == 0) { + if (ifdef_level <= 0) + diag2(1, "Unmatched #endif"); + else { + ifdef_level--; + +#ifdef undef + /* + * This match needs to be more intelligent before the + * message is useful + */ + if (match_state[ifdef_level].tos >= 0 + && bcmp(&ps, &match_state[ifdef_level], sizeof ps)) + diag2(0, "Syntactically inconsistent #ifdef alternatives"); +#endif + } + if (blanklines_around_conditional_compilation) { + postfix_blankline_requested++; + n_real_blanklines = 0; + } + } + break; /* subsequent processing of the newline + * character will cause the line to be printed */ + + case comment: /* we have gotten a / followed by * this is a biggie */ + if (flushed_nl) { /* we should force a broken line here */ + flushed_nl = false; + dump_line(); + ps.want_blank = false; /* dont insert blank at line start */ + force_nl = false; + } + pr_comment(); + break; + } /* end of big switch stmt */ + + *e_code = '\0'; /* make sure code section is null terminated */ + if (type_code != comment && type_code != newline && type_code != preesc) + ps.last_token = type_code; + } /* end of main while (1) loop */ +} + +/* + * copy input file to backup file if in_name is /blah/blah/blah/file, then + * backup file will be ".Bfile" then make the backup file the input and + * original input file the output + */ +static void +bakcopy(void) +{ + int n, + bakchn; + char buff[8 * 1024]; + const char *p; + + /* construct file name .Bfile */ + for (p = in_name; *p; p++); /* skip to end of string */ + while (p > in_name && *p != '/') /* find last '/' */ + p--; + if (*p == '/') + p++; + sprintf(bakfile, "%s.BAK", p); + + /* copy in_name to backup file */ + bakchn = creat(bakfile, 0600); + if (bakchn < 0) + err(1, "%s", bakfile); + while ((n = read(fileno(input), buff, sizeof buff)) != 0) + if (write(bakchn, buff, n) != n) + err(1, "%s", bakfile); + if (n < 0) + err(1, "%s", in_name); + close(bakchn); + fclose(input); + + /* re-open backup file as the input file */ + input = fopen(bakfile, "r"); + if (input == NULL) + err(1, "%s", bakfile); + /* now the original input file will be the output */ + output = fopen(in_name, "w"); + if (output == NULL) { + unlink(bakfile); + err(1, "%s", in_name); + } +} |